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纯代码22步绘制唯美的日夜交替动画（原生HTML+CSS+JS实现，CV即可运行+保姆级步骤教程）

我不转弯 • 2022-6-10 • html-js-css • 阅读 16

纯代码22步绘制唯美的日夜交替动画（原生HTML+CSS+JS实现，CV即可运行+保姆级步骤教程）,第1张


文章目录 前言一、HTML(index.html)1. 加入元素 二、CSS(style.css)2. 重置浏览器样式3.设置字体样式4.将我们的元素居中5.设置背景颜色6.设置动画显示的位置7.设置夜晚时的背景色8.将动画显示的区域设置为圆型9.绘制白天时天空的样子10.绘制夜晚时天空的样子11.创建昼夜交替动画12.绘制太阳13.绘制海洋13.1 海洋底层颜色13.2 绘制夜晚时的海洋13.3丰富海洋层次感并设置浮动动画 14. 绘制小船14.1 绘制船身14.2 绘制船帆14.3 设置小船动画 15. 绘制月亮16. 绘制飞鸟16.1 设置三只鸟儿的位置及样式16.2 设置鸟儿飞行的动画 17. 绘制山峰18. 绘制云朵18.1 设置云朵图层的位置，定位云朵位置18.2 绘制云朵18.2.118.2.218.2.3 18.3 添加云朵的浮动动画 19. 绘制星星20. 绘制流星及动画21.设置字体的位置及样式完整CSS代码 三、JS（index.js）22. 设置元素间属性转换 总结

前言

今天分享一个唯美的日月交替的小动画，祝大家早安晚安，每日安好鸭！
仅需22步，带领大家，使用css+js绘制超好看的动画！大家可以跟着步骤一步一步编写，也可以直接复制完整代码至编译器，看效果！

ps:现在先贴代码啦，明天醒了更新具体的步骤，带领大家一步一步制作,感谢支持！

2022.5.13
今天更新具体步骤啦！
仅需22步，带领大家，使用css+js绘制超好看的动画！大家可以跟着步骤一步一步编写，也可以直接复制完整代码至编译器，看效果！

一、HTML(index.html) 1. 加入元素

分别加入我们需要的元素，天空，云彩，飞鸟，山川，太阳等，具体看代码中的注释


<html lang="en" >
<head>
    <meta charset="UTF-8">
    <title>早安、晚安动画title>
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/meyer-reset/2.0/reset.min.css">
    <link rel="stylesheet" href="./style.css">

head>
<body>
<div class="container-wrapper">
    <h1>Good morning, and in case I don't see ya, good afternoon, good evening, and good night!h1>
    
    <p id="subtitle">点点小太阳鸭p>
    <div class="container">
        <div class="circle-container">
            
            <div class="sky">
                <div class="sky-night">
                    <div class="stars">
                        <div class="shooting-star">div>
                        <div class="star-group-1">div>
                        <div class="star-group-2">div>
                        <div class="star-group-3">div>
                        <div class="star-group-4">div>
                    div>
                div>

                
                <div class="cloud cloud-1">div>
                <div class="cloud cloud-2">div>
                <div class="cloud cloud-3">div>
                <div class="cloud cloud-4">div>
                <div class="cloud cloud-5">div>
                <div class="cloud cloud-6">div>
                <div class="bird bird-1">div>
                <div class="bird bird-2">div>
                <div class="bird bird-3">div>
            div>

            
            <div class="mountains">
                <div class="mountain-back">
                    <div class="mountain-back-1">div>
                    <div class="mountain-back-2">div>
                div>
                <div class="mountain-middle">
                    <div class="mountain-middle-1">div>
                    <div class="mountain-middle-2">div>
                div>
                <div class="mountain-top">
                    <div class="mountain-top-1">div>
                div>
            div>

            
            <div class="sun-container">
                <div class="sun">div>
            div>

            
            <div class="ocean">
                <div class="boat">div>
                <div class="ocean-night">
                    <div class="moon">div>

                    
                    <div class="mountains mountains-bottom">
                        <div class="mountain-back">
                            <div class="mountain-back-1">div>
                            <div class="mountain-back-2">div>
                        div>
                        <div class="mountain-middle">
                            <div class="mountain-middle-1">div>
                            <div class="mountain-middle-2">div>
                        div>
                        <div class="mountain-top">
                            <div class="mountain-top-1">div>
                        div>
                    div>
                div>
            div>
        div>
    div>
div>

<script src='https://cdnjs.cloudflare.com/ajax/libs/jquery/3.4.1/jquery.min.js'>script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/prefixfree/1.0.7/prefixfree.min.js">script><script src="./index.js">script>
body>
html>

运行效果：

二、CSS(style.css) 2. 重置浏览器样式

导入reset.min.css（已完成），重置浏览器标签的样式表,重新定义标签样式,覆盖浏览器的CSS默认属性,把浏览器提供的默认样式覆盖掉

@import url("https://fonts.googleapis.com/css?family=Sanchez");

* {
    padding: 0;
    margin: 0;
    -webkit-box-sizing: border-box;
    box-sizing: border-box;
}

*:before,
*:after {
    content: "";
    position: absolute;
}

运行效果：

3.设置字体样式 
html {
    font-family: "Sanchez", serif;
}

运行效果：

4.将我们的元素居中 
.container-wrapper {
    width: 100%;
    height: 100%;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -ms-flex-direction: column;
    flex-direction: column;
}

运行效果：

5.设置背景颜色 
html {
    -webkit-transition: background-color 3s ease;
    -o-transition: background-color 3s ease;
    transition: background-color 3s ease;
    -webkit-transition-delay: 2s;
    -o-transition-delay: 2s;
    transition-delay: 2s;
    background-color: #fff7f4;
}

运行效果：

6.设置动画显示的位置

子绝父相，这是父元素，设置为相对定位

.container {
    width: 450px;
    height: 450px;
    position: relative;
}
7.设置夜晚时的背景色

我们将会在js中使用它

.container-night {
    background-color: #e4ecff;
}
8.将动画显示的区域设置为圆型

根据最终效果，我们将动画显示的区域设置为原型

.circle-container {
    width: 450px;
    height: 450px;
    -webkit-clip-path: circle(50% at 50% 50%);
    clip-path: circle(50% at 50% 50%);
    position: absolute;
    overflow: hidden;
    z-index: 100;
}
9.绘制白天时天空的样子 
.sky {
    position: absolute;
    width: 100%;
    height: 55%;
    top: 0;
    background: -webkit-gradient(
            linear,
            left top,
            left bottom,
            from(#feb8b0),
            to(#fef9db)
    );
    background: -webkit-linear-gradient(#feb8b0, #fef9db);
    background: -o-linear-gradient(#feb8b0, #fef9db);
    background: linear-gradient(#feb8b0, #fef9db);
    z-index: 1;
    overflow: hidden;
}

运行效果：

10.绘制夜晚时天空的样子

绘制夜晚时天空的样子，我们使用opacity属性，将其设置为不可见，在js中使用toggleClass方法将该属性切换为1，使其可见，后头很多动画都是这么实现的。运行效果的图中将该属性设置为了1，方便大家先看到效果

.sky-night {
    position: absolute;
    width: 100%;
    height: 100%;
    background: -webkit-gradient(
            linear,
            left top,
            left bottom,
            from(#4c3f6d),
            color-stop(#6c62bb),
            to(#93b1ed)
    );
    background: -webkit-linear-gradient(#4c3f6d, #6c62bb, #93b1ed);
    background: -o-linear-gradient(#4c3f6d, #6c62bb, #93b1ed);
    background: linear-gradient(#4c3f6d, #6c62bb, #93b1ed);
    opacity: 0;
    -webkit-transition: opacity 3s;
    -o-transition: opacity 3s;
    transition: opacity 3s;
    -webkit-transition-delay: 2s;
    -o-transition-delay: 2s;
    transition-delay: 2s;
}
/*用于切换opacity属性*/
.sky-night-fade {
    opacity: 1;
}

运行效果：

11.创建昼夜交替动画 
@-webkit-keyframes sky-night {
    0% {
        background: -webkit-gradient(
                linear,
                left top,
                left bottom,
                from(#feb8b0),
                to(#fef9db)
        );
        background: -webkit-linear-gradient(#feb8b0, #fef9db);
        background: linear-gradient(#feb8b0, #fef9db);
    }
    100% {
        background: -webkit-gradient(
                linear,
                left top,
                left bottom,
                from(#4c3f6d),
                to(#96b5ee)
        );
        background: -webkit-linear-gradient(#4c3f6d, #96b5ee);
        background: linear-gradient(#4c3f6d, #96b5ee);
    }
}

@keyframes sky-night {
    0% {
        background: -webkit-gradient(
                linear,
                left top,
                left bottom,
                from(#feb8b0),
                to(#fef9db)
        );
        background: -webkit-linear-gradient(#feb8b0, #fef9db);
        background: -o-linear-gradient(#feb8b0, #fef9db);
        background: linear-gradient(#feb8b0, #fef9db);
    }
    100% {
        background: -webkit-gradient(
                linear,
                left top,
                left bottom,
                from(#4c3f6d),
                to(#96b5ee)
        );
        background: -webkit-linear-gradient(#4c3f6d, #96b5ee);
        background: -o-linear-gradient(#4c3f6d, #96b5ee);
        background: linear-gradient(#4c3f6d, #96b5ee);
    }
}
12.绘制太阳

设置太阳的位置，并绘制太阳

.sun-container {
    z-index: 10;
    position: absolute;
    left: 0;
    right: 0;
    margin: auto;
    top: 0;
    bottom: 0;
    width: 290px;
    height: 290px;
    /*    background-color: rgba(255, 0, 255, 0.2);*/
    -webkit-transform-origin: center center;
    -ms-transform-origin: center center;
    transform-origin: center center;
    -webkit-transition: all 5s ease-in-out;
    -o-transition: all 5s ease-in-out;
    transition: all 5s ease-in-out;
}

.sun {
    position: absolute;
    width: 90px;
    height: 90px;
    border-radius: 50%;
    background: -webkit-gradient(
            linear,
            left top,
            left bottom,
            from(#fefefe),
            to(#fffbe8)
    );
    background: -webkit-linear-gradient(#fefefe, #fffbe8);
    background: -o-linear-gradient(#fefefe, #fffbe8);
    background: linear-gradient(#fefefe, #fffbe8);
    cursor: pointer;
    z-index: 10;
}

13.绘制海洋 13.1 海洋底层颜色

绘制海洋部分，及其动画效果，同样使用toggleClass设置动画停止后，海洋的样式

.ocean {
    position: absolute;
    width: 100%;
    height: 45%;
    bottom: 0;
    background: #ceefe8;
    z-index: 200;
    -webkit-animation: ocean-top 3s infinite;
    animation: ocean-top 3s infinite;
    opacity: 1;
    -webkit-transition: all 3s ease;
    -o-transition: all 3s ease;
    transition: all 3s ease;
    -webkit-transition-delay: 2s;
    -o-transition-delay: 2s;
    transition-delay: 2s;
    -webkit-transform-origin: top;
    -ms-transform-origin: top;
    transform-origin: top;
}
.animation-stop {
    -webkit-animation: ocean-top 3s forwards;
    animation: ocean-top 3s forwards;
    height: 42%;
}

运行效果：

13.2 绘制夜晚时的海洋

与夜晚时的天空同理

.ocean-night {
    position: relative;
    width: 100%;
    height: 100%;
    background: -webkit-gradient(
            linear,
            left top,
            left bottom,
            from(#8da6e6),
            to(#788cc9)
    );
    background: -webkit-linear-gradient(#8da6e6, #788cc9);
    background: -o-linear-gradient(#8da6e6, #788cc9);
    background: linear-gradient(#8da6e6, #788cc9);
    opacity: 0;
    -webkit-transition: opacity 3s;
    -o-transition: opacity 3s;
    transition: opacity 3s;
    -webkit-transition-delay: 2s;
    -o-transition-delay: 2s;
    transition-delay: 2s;
    z-index: 500;
}

.ocean-night-fade {
    opacity: 1;
}

运行效果（opacity设置为1后显示效果）：

13.3丰富海洋层次感并设置浮动动画

将海洋分为三层，显得更有层次感，并绘制海洋的动画效果，使海洋浮动起来

.ocean:before,
.ocean:after {
    width: 100%;
    bottom: 0;
    position: absolute;
    z-index: 200;
}

.ocean:before {
    height: 75%;
    background: #baeced;
    -webkit-animation: ocean-middle 3s infinite;
    animation: ocean-middle 3s infinite;
}

.ocean:after {
    height: 50%;
    background: #ace6f1;
    -webkit-animation: ocean-bottom 2s infinite;
    animation: ocean-bottom 2s infinite;
}

@-webkit-keyframes ocean-top {
    0% {
        -webkit-transform: rotate(0deg);
        transform: rotate(0deg);
    }
    25% {
        -webkit-transform: rotate(-1deg);
        transform: rotate(-1deg);
    }
    50% {
        -webkit-transform: rotate(0deg);
        transform: rotate(0deg);
    }
    75% {
        -webkit-transform: rotate(1deg);
        transform: rotate(1deg);
    }
    100% {
        -webkit-transform: rotate(0deg);
        transform: rotate(0deg);
    }
}

@keyframes ocean-top {
    0% {
        -webkit-transform: rotate(0deg);
        transform: rotate(0deg);
    }
    25% {
        -webkit-transform: rotate(-1deg);
        transform: rotate(-1deg);
    }
    50% {
        -webkit-transform: rotate(0deg);
        transform: rotate(0deg);
    }
    75% {
        -webkit-transform: rotate(1deg);
        transform: rotate(1deg);
    }
    100% {
        -webkit-transform: rotate(0deg);
        transform: rotate(0deg);
    }
}

@-webkit-keyframes ocean-middle {
    0% {
        height: 75%;
    }
    50% {
        height: 77%;
        -webkit-transform: rotate(2deg);
        transform: rotate(2deg);
    }
    100% {
        height: 75%;
    }
}

@keyframes ocean-middle {
    0% {
        height: 75%;
    }
    50% {
        height: 77%;
        -webkit-transform: rotate(2deg);
        transform: rotate(2deg);
    }
    100% {
        height: 75%;
    }
}

@-webkit-keyframes ocean-bottom {
    0% {
        height: 50%;
    }
    50% {
        height: 52%;
        -webkit-transform: rotate(-2deg);
        transform: rotate(-2deg);
    }
    100% {
        height: 50%;
    }
}

@keyframes ocean-bottom {
    0% {
        height: 50%;
    }
    50% {
        height: 52%;
        -webkit-transform: rotate(-2deg);
        transform: rotate(-2deg);
    }
    100% {
        height: 50%;
    }
}

运行效果：

14. 绘制小船 14.1 绘制船身

绘制船身，及切换夜晚时小船移出显示范围，同样是使用toggleClass

.boat {
    position: absolute;
    width: 50px;
    height: 0px;
    border-top: 7px solid #bb7074;
    border-left: 10px solid transparent;
    border-right: 10px solid transparent;
    left: 280px;
    /*    right: -50px;*/
    top: -5px;
    -webkit-transform-origin: center bottom;
    -ms-transform-origin: center bottom;
    transform-origin: center bottom;
    -webkit-animation: boat 5s infinite;
    animation: boat 5s infinite;
    -webkit-animation-delay: 0.25s;
    animation-delay: 0.25s;
    -webkit-transition: all 4s ease-in-out;
    -o-transition: all 4s ease-in-out;
    transition: all 4s ease-in-out;
}

.boat-sail {
    margin-left: -350px;
}

运行效果：

14.2 绘制船帆 
.boat,
.boat:before,
.boat:after {
    position: absolute;
    z-index: 200;
}
.boat:before,
.boat:after {
    width: 0;
    height: 0;
    border: 0 solid transparent;
}

.boat:before {
    bottom: 8px;
    right: -6px;
    border-right-width: 15px;
    border-left-width: 0px;
    border-bottom: 30px solid #bb7074;
}

.boat:after {
    bottom: 8px;
    right: 11px;
    border-right-width: 0px;
    border-left-width: 20px;
    border-bottom: 48px solid #bb7074;
}

运行效果：

14.3 设置小船动画

设置小船在海洋上浮动的动画

@-webkit-keyframes boat {
    0% {
        -webkit-transform: rotate(1deg)translate(2px, 0px);
        transform: rotate(1deg)translate(2px, 0px);
    }
    25% {
        -webkit-transform: rotate(-1deg) translate(-2px, -2px);
        transform: rotate(-1deg) translate(-2px, -2px);
    }
    50% {
        -webkit-transform: rotate(1deg) translate(1px, 0px);
        transform: rotate(1deg) translate(1px, 0px);
    }
    75% {
        -webkit-transform: rotate(-1deg) translate(-1px, -2px);
        transform: rotate(-1deg) translate(-1px, -2px);
    }
    100% {
        -webkit-transform: rotate(1deg) translate(2px, 0px);
        transform: rotate(1deg) translate(2px, 0px);
    }
}

@keyframes boat {
    0% {
        -webkit-transform: rotate(1deg)translate(2px, 0px);
        transform: rotate(1deg)translate(2px, 0px);
    }
    25% {
        -webkit-transform: rotate(-1deg) translate(-2px, -2px);
        transform: rotate(-1deg) translate(-2px, -2px);
    }
    50% {
        -webkit-transform: rotate(1deg) translate(1px, 0px);
        transform: rotate(1deg) translate(1px, 0px);
    }
    75% {
        -webkit-transform: rotate(-1deg) translate(-1px, -2px);
        transform: rotate(-1deg) translate(-1px, -2px);
    }
    100% {
        -webkit-transform: rotate(1deg) translate(2px, 0px);
        transform: rotate(1deg) translate(2px, 0px);
    }
}
15. 绘制月亮

与太阳差不多

.moon {
    position: absolute;
    width: 90px;
    height: 90px;
    border-radius: 50%;
    background: -webkit-gradient(
            linear,
            left top,
            left bottom,
            from(#fefefe),
            to(#fffbe8)
    );
    background: -webkit-linear-gradient(#fefefe, #fffbe8);
    background: -o-linear-gradient(#fefefe, #fffbe8);
    background: linear-gradient(#fefefe, #fffbe8);
    opacity: 0;
    left: 80px;
    margin-top: 90px;
    -webkit-transition: opacity 1s ease;
    -o-transition: opacity 1s ease;
    transition: opacity 1s ease;
}

.moon-fade {
    opacity: 0.3;
    -webkit-transition-delay: 4s;
    -o-transition-delay: 4s;
    transition-delay: 4s;
}
16. 绘制飞鸟 16.1 设置三只鸟儿的位置及样式 
.bird:before,
.bird:after {
    border: 2px solid #bb7074;
    border-bottom: 0;
    width: 18px;
    height: 8px;
    z-index: 200;
}

.bird {
    position: absolute;
    -webkit-animation: bird 1s infinite;
    animation: bird 1s infinite;
    z-index: 200;
    -webkit-transition: all 2s ease-in-out;
    -o-transition: all 2s ease-in-out;
    transition: all 2s ease-in-out;
}

.birds-fly {
    margin-left: 150px;
    margin-top: -100px;
}

.bird:after {
    border-top-left-radius: 18px;
    border-top-right-radius: 18px;
    border-right: 0;
    -webkit-animation: wing-right 1s infinite;
    animation: wing-right 1s infinite;
    -webkit-transform-origin: bottom left;
    -ms-transform-origin: bottom left;
    transform-origin: bottom left;
}

.bird:before {
    left: -19px;
    border-top-right-radius: 18px;
    border-top-left-radius: 18px;
    border-left: 0;
    -webkit-animation: wing-left 1s infinite;
    animation: wing-left 1s infinite;
    -webkit-transform-origin: bottom right;
    -ms-transform-origin: bottom right;
    transform-origin: bottom right;
}

.bird-1 {
    left: 240px;
    top: 140px;
    -webkit-transform: scale(0.9)rotate(10deg);
    -ms-transform: scale(0.9)rotate(10deg);
    transform: scale(0.9)rotate(10deg);
    -webkit-animation-delay: 0.4s;
    animation-delay: 0.4s;
}

.bird-2 {
    left: 280px;
    top: 120px;
    -webkit-transform: scale(0.8)rotate(-5deg);
    -ms-transform: scale(0.8)rotate(-5deg);
    transform: scale(0.8)rotate(-5deg);
    -webkit-animation-delay: 0.2s;
    animation-delay: 0.2s;
}

.bird-3 {
    left: 250px;
    top: 100px;
    -webkit-transform: scale(1)rotate(8deg);
    -ms-transform: scale(1)rotate(8deg);
    transform: scale(1)rotate(8deg);
}

运行效果：

16.2 设置鸟儿飞行的动画

从小变大，展现从远处飞来的动画，以及翅膀的挥动（wing-left/wing-right），在步骤16.1中调用该动画

@-webkit-keyframes bird {
   0% {
       -webkit-transform: translate(0px, 0px);
       transform: translate(0px, 0px);
   }
   50% {
       -webkit-transform: translate(2px, -3px);
       transform: translate(2px, -3px);
   }
   100% {
       -webkit-transform: translate(0px, 0px);
       transform: translate(0px, 0px);
   }
}

@keyframes bird {
   0% {
       -webkit-transform: translate(0px, 0px);
       transform: translate(0px, 0px);
   }
   50% {
       -webkit-transform: translate(2px, -3px);
       transform: translate(2px, -3px);
   }
   100% {
       -webkit-transform: translate(0px, 0px);
       transform: translate(0px, 0px);
   }
}

@-webkit-keyframes wing-right {
   0% {
       -webkit-transform: rotate(0deg);
       transform: rotate(0deg);
   }
   50% {
       -webkit-transform: rotate(10deg);
       transform: rotate(10deg);
   }
   100% {
       -webkit-transform: rotate(0deg);
       transform: rotate(0deg);
   }
}

@keyframes wing-right {
   0% {
       -webkit-transform: rotate(0deg);
       transform: rotate(0deg);
   }
   50% {
       -webkit-transform: rotate(10deg);
       transform: rotate(10deg);
   }
   100% {
       -webkit-transform: rotate(0deg);
       transform: rotate(0deg);
   }
}

@-webkit-keyframes wing-left {
   0% {
       -webkit-transform: rotate(0deg);
       transform: rotate(0deg);
   }
   50% {
       -webkit-transform: rotate(-10deg);
       transform: rotate(-10deg);
   }
   100% {
       -webkit-transform: rotate(0deg);
       transform: rotate(0deg);
   }
}

@keyframes wing-left {
   0% {
       -webkit-transform: rotate(0deg);
       transform: rotate(0deg);
   }
   50% {
       -webkit-transform: rotate(-10deg);
       transform: rotate(-10deg);
   }
   100% {
       -webkit-transform: rotate(0deg);
       transform: rotate(0deg);
   }
}

运行效果：

17. 绘制山峰

首先设置山峰图层的位置，定位山峰的位置，然后绘制三个图层的山峰，黄色，粉色，红色依次对应top，middle，back三层山峰

.mountains {
    position: absolute;
    width: 100%;
    /*        background-color: #ccc;*/
    height: 20%;
    bottom: 35%;
    /*        overflow: hidden;*/
}

.mountains-bottom {
    opacity: 0.5;
    -webkit-transform-origin: center;
    -ms-transform-origin: center;
    transform-origin: center;
    -webkit-transform: scaleY(-1);
    -ms-transform: scaleY(-1);
    transform: scaleY(-1);
    top: 0;
    position: fixed;
    overflow: hidden;
    height: 31.5%;
}

.mountains div,
.mountains div:after,
.mountains div:before {
    border-radius: 50%;
    position: absolute;
    z-index: 200;
}

.mountains * {
    -webkit-transition: background 3s ease;
    -o-transition: background 3s ease;
    transition: background 3s ease;
    -webkit-transition-delay: 2s;
    -o-transition-delay: 2s;
    transition-delay: 2s;
}

.mountain-top,
.mountain-top * {
    background: #fffcdd;
}

.mountain-top {
    width: 200px;
    height: 90px;
    top: 18px;
    right: 0;
    margin-right: -50px;
}

.mountain-top-1 {
    position: absolute;
    width: 250px;
    height: 80px;
    top: 15px;
    right: 0;
    margin-right: 150px;
}
/*夜晚的山*/
.mountain-top-night {
    background: #614da2;
}

.mountain-middle,
.mountain-middle * {
    background: #fee1cb;
}

.mountain-middle {
    width: 180px;
    height: 120px;
    top: 12px;
    margin-left: 180px;
}

.mountain-middle-1 {
    width: 200px;
    height: 100px;
    top: 3px;
    margin-left: -110px;
}

.mountain-middle-2 {
    width: 220px;
    height: 150px;
    margin-left: -250px;
}

.mountain-middle-night {
    background: #6154a4;
}

.mountain-back,
.mountain-back * {
    background: #fec6b9;
}

.mountain-back {
    width: 180px;
    height: 120px;
    top: 0px;
}

.mountain-back-1 {
    width: 200px;
    height: 100px;
    top: 3px;
    margin-left: 80px;
}

.mountain-back-2 {
    width: 150px;
    height: 80px;
    margin-left: 250px;
}

.mountain-back-night {
    background: #7980c8;
}

运行效果：

18. 绘制云朵 18.1 设置云朵图层的位置，定位云朵位置 
.cloud,
.cloud:after,
.cloud:before {
    background: #fff;
    position: absolute;
    z-index: 500;
}


.cloud-1 {
    left: 310px;
    top: 50px;
}

.cloud-2 {
    left: 280px;
    top: 150px;
    -webkit-animation-delay: 0.2s;
    animation-delay: 0.2s;
}

.cloud-3 {
    left: 410px;
    top: 190px;
    -webkit-animation-delay: 0.4s;
    animation-delay: 0.4s;
}

.cloud-4 {
    left: 160px;
    top: 120px;
    -webkit-animation-delay: 0.6s;
    animation-delay: 0.6s;
}

.cloud-5 {
    left: 60px;
    top: 170px;
    -webkit-animation-delay: 0.8s;
    animation-delay: 0.8s;
}

.cloud-6 {
    left: 0px;
    top: 100px;
    -webkit-animation-delay: 1s;
    animation-delay: 1s;
}
18.2 绘制云朵 18.2.1 
.cloud {
    width: 65px;
    height: 12px;
    border-radius: 20px;
    -webkit-animation: cloud 4s infinite;
    animation: cloud 4s infinite;
}

运行效果：

18.2.2 
.cloud:after {
    border-radius: 50%;
    height: 30px;
    left: 27px;
    top: -18px;
    width: 30px;
}

运行效果：

18.2.3 
.cloud:before {
    border-radius: 50%;
    height: 20px;
    left: 12px;
    top: -11px;
    width: 20px;
}

运行效果：

18.3 添加云朵的浮动动画 
@-webkit-keyframes cloud {
    0% {
        -webkit-transform: translate(0px, 0px);
        transform: translate(0px, 0px);
    }
    25% {
        -webkit-transform: translate(2px, 2px);
        transform: translate(2px, 2px);
    }
    50% {
        -webkit-transform: translate(0px, 0px);
        transform: translate(0px, 0px);
    }
    75% {
        -webkit-transform: translate(-1px, -1px);
        transform: translate(-1px, -1px);
    }
    100% {
        -webkit-transform: translate(0px, 0px);
        transform: translate(0px, 0px);
    }
}

@keyframes cloud {
    0% {
        -webkit-transform: translate(0px, 0px);
        transform: translate(0px, 0px);
    }
    25% {
        -webkit-transform: translate(2px, 2px);
        transform: translate(2px, 2px);
    }
    50% {
        -webkit-transform: translate(0px, 0px);
        transform: translate(0px, 0px);
    }
    75% {
        -webkit-transform: translate(-1px, -1px);
        transform: translate(-1px, -1px);
    }
    100% {
        -webkit-transform: translate(0px, 0px);
        transform: translate(0px, 0px);
    }
}

运行效果：

19. 绘制星星

加入小星星，并添加闪烁动画，步骤还是和之前一样

.stars *,
.stars *:before,
.stars *:after {
    border-radius: 50%;
    background-color: #fff;
    position: absolute;
}

.stars {
    opacity: 0;
    -webkit-transition: opacity 2s ease;
    -o-transition: opacity 2s ease;
    transition: opacity 2s ease;
}

.stars-fade {
    opacity: 1;
    -webkit-transition-delay: 4s;
    -o-transition-delay: 4s;
    transition-delay: 4s;
}

.star-group-1 {
    width: 5px;
    height: 5px;
    left: 225px;
    top: 120px;
    animation: twinkle 2s infinite linear;
}

.star-group-1:before {
    width: 4px;
    height: 4px;
    left: 50px;
    top: 18px;
    opacity: 0.8;
}

.star-group-1:after {
    width: 3px;
    height: 3px;
    left: -35px;
    top: 35px;
    opacity: 1;
}

.star-group-2 {
    width: 5px;
    height: 5px;
    left: 25px;
    top: 175px;
    animation: twinkle 1s infinite linear;
}

.star-group-2:before {
    width: 4px;
    height: 4px;
    left: 40px;
    top: 14px;
    opacity: 0.8;
}

.star-group-2:after {
    width: 3px;
    height: 3px;
    left: 30px;
    top: -40px;
    opacity: 1;
}

.star-group-3 {
    width: 5px;
    height: 5px;
    left: 125px;
    top: 50px;
    animation: twinkle 0.8s infinite linear;
}

.star-group-3:before {
    width: 4px;
    height: 4px;
    left: 50px;
    top: 20px;
    opacity: 0.8;
}

.star-group-3:after {
    width: 3px;
    height: 3px;
    left: 90px;
    top: -20px;
    opacity: 1;
}

.star-group-4 {
    width: 5px;
    height: 5px;
    left: 300px;
    top: 100px;
    animation: twinkle 1.2s infinite linear;
}

.star-group-4:before {
    width: 3px;
    height: 3px;
    left: 80px;
    top: 60px;
    opacity: 0.8;
}

.star-group-4:after {
    width: 3px;
    height: 3px;
    left: 50px;
    top: -20px;
    opacity: 1;
}

运行效果（将夜晚的opacity设置为1时）：

20. 绘制流星及动画 
@-webkit-keyframes twinkle {
    0% {
        opacity: 1;
    }
    25% {
        opacity: 0.3;
    }
    50% {
        opacity: 0.8;
    }
    75% {
        opacity: 0.5;
    }
    100% {
        opacity: 0.8;
    }
}

@keyframes twinkle {
    0% {
        opacity: 1;
    }
    25% {
        opacity: 0.3;
    }
    50% {
        opacity: 0.8;
    }
    75% {
        opacity: 0.5;
    }
    100% {
        opacity: 0.8;
    }
}

.shooting-star {
    position: absolute;
    background: -webkit-gradient(
            linear,
            left top,
            right top,
            from(rgba(255, 255, 255, 1)),
            to(rgba(255, 255, 255, 0))
    );
    background: -webkit-linear-gradient(
            left,
            rgba(255, 255, 255, 1) 0%,
            rgba(255, 255, 255, 0) 100%
    );
    background: -o-linear-gradient(
            left,
            rgba(255, 255, 255, 1) 0%,
            rgba(255, 255, 255, 0) 100%
    );
    background: linear-gradient(
            to right,
            rgba(255, 255, 255, 1) 0%,
            rgba(255, 255, 255, 0) 100%
    );
    width: 35px;
    height: 3px;
    left: 310px;
    top: 10px;
    -webkit-transform-origin: left;
    -ms-transform-origin: left;
    transform-origin: left;
    -webkit-transform: rotate(-40deg);
    -ms-transform: rotate(-40deg);
    transform: rotate(-40deg);
}

.shooting {
    -webkit-animation: shooting-star 2s 2 ease-in-out;
    animation: shooting-star 2s 2 ease-in-out;
    -webkit-animation-delay: 5s;
    animation-delay: 5s;
}

@-webkit-keyframes shooting-star {
    100% {
        -webkit-transform: rotate(-40deg)translateX(-450px);
        transform: rotate(-40deg)translateX(-450px);
    }
}

@keyframes shooting-star {
    100% {
        -webkit-transform: rotate(-40deg)translateX(-450px);
        transform: rotate(-40deg)translateX(-450px);
    }
}
21.设置字体的位置及样式 
p a:link,
p a:active,
p a:visited {
    color: inherit;
    text-decoration: none;
    border-bottom: 1px dotted;
    border-bottom-color: inherit;
    opacity: 0.6;
}

h1,
p {
    color: #bb7074;
    -webkit-transition: color 3s;
    -o-transition: color 3s;
    transition: color 3s;
    -webkit-transition-delay: 2s;
    -o-transition-delay: 2s;
    transition-delay: 2s;
    text-align: center;
}

h1 {
    margin: 60px 0 10px 0;
    font-size: 30px;
    position: relative;
}


p {
    font-size: 16px;
    line-height: 16px;
    margin: 40px;
    position: relative;
    opacity:0.6;
}


p#subtitle {
    margin-top: 10px;
}

.text-color {
    color: #7980c8;

运行效果：

完整CSS代码 
/*2.导入reset.min.css，重置浏览器标签的样式表,重新定义标签样式,覆盖浏览器的CSS默认属性,把浏览器提供的默认样式覆盖掉*/
@import url("https://fonts.googleapis.com/css?family=Sanchez");

* {
    padding: 0;
    margin: 0;
    -webkit-box-sizing: border-box;
    box-sizing: border-box;
}

*:before,
*:after {
    content: "";
    position: absolute;
}
/*3.设置字体样式*/
html {
    font-family: "Sanchez", serif;
}
/*4.将我们的元素居中*/
.container-wrapper {
    width: 100%;
    height: 100%;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -ms-flex-direction: column;
    flex-direction: column;
}

/*5.设置背景颜色*/
html {
    -webkit-transition: background-color 3s ease;
    -o-transition: background-color 3s ease;
    transition: background-color 3s ease;
    -webkit-transition-delay: 2s;
    -o-transition-delay: 2s;
    transition-delay: 2s;
    background-color: #fff7f4;
}
/*6.设置动画显示的位置，子绝父相，这是父元素，设置为相对定位*/
.container {
    width: 450px;
    height: 450px;
    position: relative;
}
/*7.设置夜晚时的背景色，我们将会在js中使用它*/
.container-night {
    background-color: #e4ecff;
}
/*8.根据最终效果，我们将动画显示的区域设置为原型*/
.circle-container {
    width: 450px;
    height: 450px;
    -webkit-clip-path: circle(50% at 50% 50%);
    clip-path: circle(50% at 50% 50%);
    position: absolute;
    overflow: hidden;
    z-index: 100;
}
/*9.绘制白天时天空的样子*/
.sky {
    position: absolute;
    width: 100%;
    height: 55%;
    top: 0;
    background: -webkit-gradient(
            linear,
            left top,
            left bottom,
            from(#feb8b0),
            to(#fef9db)
    );
    background: -webkit-linear-gradient(#feb8b0, #fef9db);
    background: -o-linear-gradient(#feb8b0, #fef9db);
    background: linear-gradient(#feb8b0, #fef9db);
    z-index: 1;
    overflow: hidden;
}
/*10.绘制夜晚时天空的样子，我们使用opacity属性，将其设置为不可见，在js中使用toggleClass方法将该属性切换为1，使其可见。运行效果的图中将该属性设置为了1，方便大家先看到效果*/
.sky-night {
    position: absolute;
    width: 100%;
    height: 100%;
    background: -webkit-gradient(
            linear,
            left top,
            left bottom,
            from(#4c3f6d),
            color-stop(#6c62bb),
            to(#93b1ed)
    );
    background: -webkit-linear-gradient(#4c3f6d, #6c62bb, #93b1ed);
    background: -o-linear-gradient(#4c3f6d, #6c62bb, #93b1ed);
    background: linear-gradient(#4c3f6d, #6c62bb, #93b1ed);
    opacity: 0;
    -webkit-transition: opacity 3s;
    -o-transition: opacity 3s;
    transition: opacity 3s;
    -webkit-transition-delay: 2s;
    -o-transition-delay: 2s;
    transition-delay: 2s;
}
/*用于切换opacity属性*/
.sky-night-fade {
    opacity: 1;
}
/*11.@-webkit-keyframes 创建动画，设置昼夜交替时天空的变换过程0%为开头动画，100%为动画完成*/
@-webkit-keyframes sky-night {
    0% {
        background: -webkit-gradient(
                linear,
                left top,
                left bottom,
                from(#feb8b0),
                to(#fef9db)
        );
        background: -webkit-linear-gradient(#feb8b0, #fef9db);
        background: linear-gradient(#feb8b0, #fef9db);
    }
    100% {
        background: -webkit-gradient(
                linear,
                left top,
                left bottom,
                from(#4c3f6d),
                to(#96b5ee)
        );
        background: -webkit-linear-gradient(#4c3f6d, #96b5ee);
        background: linear-gradient(#4c3f6d, #96b5ee);
    }
}

@keyframes sky-night {
    0% {
        background: -webkit-gradient(
                linear,
                left top,
                left bottom,
                from(#feb8b0),
                to(#fef9db)
        );
        background: -webkit-linear-gradient(#feb8b0, #fef9db);
        background: -o-linear-gradient(#feb8b0, #fef9db);
        background: linear-gradient(#feb8b0, #fef9db);
    }
    100% {
        background: -webkit-gradient(
                linear,
                left top,
                left bottom,
                from(#4c3f6d),
                to(#96b5ee)
        );
        background: -webkit-linear-gradient(#4c3f6d, #96b5ee);
        background: -o-linear-gradient(#4c3f6d, #96b5ee);
        background: linear-gradient(#4c3f6d, #96b5ee);
    }
}
/*12.设置太阳的位置，并绘制太阳*/
.sun-container {
    z-index: 10;
    position: absolute;
    left: 0;
    right: 0;
    margin: auto;
    top: 0;
    bottom: 0;
    width: 290px;
    height: 290px;
    /*    background-color: rgba(255, 0, 255, 0.2);*/
    -webkit-transform-origin: center center;
    -ms-transform-origin: center center;
    transform-origin: center center;
    -webkit-transition: all 5s ease-in-out;
    -o-transition: all 5s ease-in-out;
    transition: all 5s ease-in-out;
}

.sun {
    position: absolute;
    width: 90px;
    height: 90px;
    border-radius: 50%;
    background: -webkit-gradient(
            linear,
            left top,
            left bottom,
            from(#fefefe),
            to(#fffbe8)
    );
    background: -webkit-linear-gradient(#fefefe, #fffbe8);
    background: -o-linear-gradient(#fefefe, #fffbe8);
    background: linear-gradient(#fefefe, #fffbe8);
    cursor: pointer;
    z-index: 10;
}
/*13.绘制海洋部分，及其动画效果，同样使用toggleClass设置动画停止后，海洋的样式*/
.ocean {
    position: absolute;
    width: 100%;
    height: 45%;
    bottom: 0;
    background: #ceefe8;
    z-index: 200;
    -webkit-animation: ocean-top 3s infinite;
    animation: ocean-top 3s infinite;
    opacity: 1;
    -webkit-transition: all 3s ease;
    -o-transition: all 3s ease;
    transition: all 3s ease;
    -webkit-transition-delay: 2s;
    -o-transition-delay: 2s;
    transition-delay: 2s;
    -webkit-transform-origin: top;
    -ms-transform-origin: top;
    transform-origin: top;
}
.animation-stop {
    -webkit-animation: ocean-top 3s forwards;
    animation: ocean-top 3s forwards;
    height: 42%;
}
/*14.绘制夜晚时的海洋，与夜晚时的天空同理*/
.ocean-night {
    position: relative;
    width: 100%;
    height: 100%;
    background: -webkit-gradient(
            linear,
            left top,
            left bottom,
            from(#8da6e6),
            to(#788cc9)
    );
    background: -webkit-linear-gradient(#8da6e6, #788cc9);
    background: -o-linear-gradient(#8da6e6, #788cc9);
    background: linear-gradient(#8da6e6, #788cc9);
    opacity: 0;
    -webkit-transition: opacity 3s;
    -o-transition: opacity 3s;
    transition: opacity 3s;
    -webkit-transition-delay: 2s;
    -o-transition-delay: 2s;
    transition-delay: 2s;
    z-index: 500;
}

.ocean-night-fade {
    opacity: 1;
}

/*15.将海洋分为三层，显得更有层次感，并绘制海洋的动画效果，使海洋浮动起来*/
.ocean:before,
.ocean:after {
    width: 100%;
    bottom: 0;
    position: absolute;
    z-index: 200;
}

.ocean:before {
    height: 75%;
    background: #baeced;
    -webkit-animation: ocean-middle 3s infinite;
    animation: ocean-middle 3s infinite;
}

.ocean:after {
    height: 50%;
    background: #ace6f1;
    -webkit-animation: ocean-bottom 2s infinite;
    animation: ocean-bottom 2s infinite;
}

@-webkit-keyframes ocean-top {
    0% {
        -webkit-transform: rotate(0deg);
        transform: rotate(0deg);
    }
    25% {
        -webkit-transform: rotate(-1deg);
        transform: rotate(-1deg);
    }
    50% {
        -webkit-transform: rotate(0deg);
        transform: rotate(0deg);
    }
    75% {
        -webkit-transform: rotate(1deg);
        transform: rotate(1deg);
    }
    100% {
        -webkit-transform: rotate(0deg);
        transform: rotate(0deg);
    }
}

@keyframes ocean-top {
    0% {
        -webkit-transform: rotate(0deg);
        transform: rotate(0deg);
    }
    25% {
        -webkit-transform: rotate(-1deg);
        transform: rotate(-1deg);
    }
    50% {
        -webkit-transform: rotate(0deg);
        transform: rotate(0deg);
    }
    75% {
        -webkit-transform: rotate(1deg);
        transform: rotate(1deg);
    }
    100% {
        -webkit-transform: rotate(0deg);
        transform: rotate(0deg);
    }
}

@-webkit-keyframes ocean-middle {
    0% {
        height: 75%;
    }
    50% {
        height: 77%;
        -webkit-transform: rotate(2deg);
        transform: rotate(2deg);
    }
    100% {
        height: 75%;
    }
}

@keyframes ocean-middle {
    0% {
        height: 75%;
    }
    50% {
        height: 77%;
        -webkit-transform: rotate(2deg);
        transform: rotate(2deg);
    }
    100% {
        height: 75%;
    }
}

@-webkit-keyframes ocean-bottom {
    0% {
        height: 50%;
    }
    50% {
        height: 52%;
        -webkit-transform: rotate(-2deg);
        transform: rotate(-2deg);
    }
    100% {
        height: 50%;
    }
}

@keyframes ocean-bottom {
    0% {
        height: 50%;
    }
    50% {
        height: 52%;
        -webkit-transform: rotate(-2deg);
        transform: rotate(-2deg);
    }
    100% {
        height: 50%;
    }
}
/*16.绘制小船，及切换夜晚时小船移出显示范围，同样是使用toggleClass*/
.boat {
    position: absolute;
    width: 50px;
    height: 0px;
    border-top: 7px solid #bb7074;
    border-left: 10px solid transparent;
    border-right: 10px solid transparent;
    left: 280px;
    /*    right: -50px;*/
    top: -5px;
    -webkit-transform-origin: center bottom;
    -ms-transform-origin: center bottom;
    transform-origin: center bottom;
    -webkit-animation: boat 5s infinite;
    animation: boat 5s infinite;
    -webkit-animation-delay: 0.25s;
    animation-delay: 0.25s;
    -webkit-transition: all 4s ease-in-out;
    -o-transition: all 4s ease-in-out;
    transition: all 4s ease-in-out;
}

.boat-sail {
    margin-left: -350px;
}
/*17.绘制船帆*/
.boat,
.boat:before,
.boat:after {
    position: absolute;
    z-index: 200;
}
.boat:before,
.boat:after {
    width: 0;
    height: 0;
    border: 0 solid transparent;
}

.boat:before {
    bottom: 8px;
    right: -6px;
    border-right-width: 15px;
    border-left-width: 0px;
    border-bottom: 30px solid #bb7074;
}

.boat:after {
    bottom: 8px;
    right: 11px;
    border-right-width: 0px;
    border-left-width: 20px;
    border-bottom: 48px solid #bb7074;
}

/*17.设置小船在海洋上浮动的动画*/
@-webkit-keyframes boat {
    0% {
        -webkit-transform: rotate(1deg)translate(2px, 0px);
        transform: rotate(1deg)translate(2px, 0px);
    }
    25% {
        -webkit-transform: rotate(-1deg) translate(-2px, -2px);
        transform: rotate(-1deg) translate(-2px, -2px);
    }
    50% {
        -webkit-transform: rotate(1deg) translate(1px, 0px);
        transform: rotate(1deg) translate(1px, 0px);
    }
    75% {
        -webkit-transform: rotate(-1deg) translate(-1px, -2px);
        transform: rotate(-1deg) translate(-1px, -2px);
    }
    100% {
        -webkit-transform: rotate(1deg) translate(2px, 0px);
        transform: rotate(1deg) translate(2px, 0px);
    }
}

@keyframes boat {
    0% {
        -webkit-transform: rotate(1deg)translate(2px, 0px);
        transform: rotate(1deg)translate(2px, 0px);
    }
    25% {
        -webkit-transform: rotate(-1deg) translate(-2px, -2px);
        transform: rotate(-1deg) translate(-2px, -2px);
    }
    50% {
        -webkit-transform: rotate(1deg) translate(1px, 0px);
        transform: rotate(1deg) translate(1px, 0px);
    }
    75% {
        -webkit-transform: rotate(-1deg) translate(-1px, -2px);
        transform: rotate(-1deg) translate(-1px, -2px);
    }
    100% {
        -webkit-transform: rotate(1deg) translate(2px, 0px);
        transform: rotate(1deg) translate(2px, 0px);
    }
}


/*18.绘制月亮，与太阳差不多*/
.moon {
    position: absolute;
    width: 90px;
    height: 90px;
    border-radius: 50%;
    background: -webkit-gradient(
            linear,
            left top,
            left bottom,
            from(#fefefe),
            to(#fffbe8)
    );
    background: -webkit-linear-gradient(#fefefe, #fffbe8);
    background: -o-linear-gradient(#fefefe, #fffbe8);
    background: linear-gradient(#fefefe, #fffbe8);
    opacity: 0;
    left: 80px;
    margin-top: 90px;
    -webkit-transition: opacity 1s ease;
    -o-transition: opacity 1s ease;
    transition: opacity 1s ease;
}

.moon-fade {
    opacity: 0.3;
    -webkit-transition-delay: 4s;
    -o-transition-delay: 4s;
    transition-delay: 4s;
}


/*19.设置三只鸟儿的位置及样式*/
.bird:before,
.bird:after {
    border: 2px solid #bb7074;
    border-bottom: 0;
    width: 18px;
    height: 8px;
    z-index: 200;
}

.bird {
    position: absolute;
    -webkit-animation: bird 1s infinite;
    animation: bird 1s infinite;
    z-index: 200;
    -webkit-transition: all 2s ease-in-out;
    -o-transition: all 2s ease-in-out;
    transition: all 2s ease-in-out;
}

.birds-fly {
    margin-left: 150px;
    margin-top: -100px;
}

.bird:after {
    border-top-left-radius: 18px;
    border-top-right-radius: 18px;
    border-right: 0;
    -webkit-animation: wing-right 1s infinite;
    animation: wing-right 1s infinite;
    -webkit-transform-origin: bottom left;
    -ms-transform-origin: bottom left;
    transform-origin: bottom left;
}

.bird:before {
    left: -19px;
    border-top-right-radius: 18px;
    border-top-left-radius: 18px;
    border-left: 0;
    -webkit-animation: wing-left 1s infinite;
    animation: wing-left 1s infinite;
    -webkit-transform-origin: bottom right;
    -ms-transform-origin: bottom right;
    transform-origin: bottom right;
}

.bird-1 {
    left: 240px;
    top: 140px;
    -webkit-transform: scale(0.9)rotate(10deg);
    -ms-transform: scale(0.9)rotate(10deg);
    transform: scale(0.9)rotate(10deg);
    -webkit-animation-delay: 0.4s;
    animation-delay: 0.4s;
}

.bird-2 {
    left: 280px;
    top: 120px;
    -webkit-transform: scale(0.8)rotate(-5deg);
    -ms-transform: scale(0.8)rotate(-5deg);
    transform: scale(0.8)rotate(-5deg);
    -webkit-animation-delay: 0.2s;
    animation-delay: 0.2s;
}

.bird-3 {
    left: 250px;
    top: 100px;
    -webkit-transform: scale(1)rotate(8deg);
    -ms-transform: scale(1)rotate(8deg);
    transform: scale(1)rotate(8deg);
}
/*20.设置鸟儿飞行的动画，从小变大，展现从远处飞来的动画，以及翅膀的挥动（wing-left/wing-right），在步骤19中调用该动画*/
@-webkit-keyframes bird {
    0% {
        -webkit-transform: translate(0px, 0px);
        transform: translate(0px, 0px);
    }
    50% {
        -webkit-transform: translate(2px, -3px);
        transform: translate(2px, -3px);
    }
    100% {
        -webkit-transform: translate(0px, 0px);
        transform: translate(0px, 0px);
    }
}

@keyframes bird {
    0% {
        -webkit-transform: translate(0px, 0px);
        transform: translate(0px, 0px);
    }
    50% {
        -webkit-transform: translate(2px, -3px);
        transform: translate(2px, -3px);
    }
    100% {
        -webkit-transform: translate(0px, 0px);
        transform: translate(0px, 0px);
    }
}

@-webkit-keyframes wing-right {
    0% {
        -webkit-transform: rotate(0deg);
        transform: rotate(0deg);
    }
    50% {
        -webkit-transform: rotate(10deg);
        transform: rotate(10deg);
    }
    100% {
        -webkit-transform: rotate(0deg);
        transform: rotate(0deg);
    }
}

@keyframes wing-right {
    0% {
        -webkit-transform: rotate(0deg);
        transform: rotate(0deg);
    }
    50% {
        -webkit-transform: rotate(10deg);
        transform: rotate(10deg);
    }
    100% {
        -webkit-transform: rotate(0deg);
        transform: rotate(0deg);
    }
}

@-webkit-keyframes wing-left {
    0% {
        -webkit-transform: rotate(0deg);
        transform: rotate(0deg);
    }
    50% {
        -webkit-transform: rotate(-10deg);
        transform: rotate(-10deg);
    }
    100% {
        -webkit-transform: rotate(0deg);
        transform: rotate(0deg);
    }
}

@keyframes wing-left {
    0% {
        -webkit-transform: rotate(0deg);
        transform: rotate(0deg);
    }
    50% {
        -webkit-transform: rotate(-10deg);
        transform: rotate(-10deg);
    }
    100% {
        -webkit-transform: rotate(0deg);
        transform: rotate(0deg);
    }
}
/*21.首先设置山峰图层的位置，定位山峰的位置，然后绘制三个图层的山峰，黄色，粉色，红色依次对应top，middle，back三层山峰*/
.mountains {
    position: absolute;
    width: 100%;
    /*        background-color: #ccc;*/
    height: 20%;
    bottom: 35%;
    /*        overflow: hidden;*/
}

.mountains-bottom {
    opacity: 0.5;
    -webkit-transform-origin: center;
    -ms-transform-origin: center;
    transform-origin: center;
    -webkit-transform: scaleY(-1);
    -ms-transform: scaleY(-1);
    transform: scaleY(-1);
    top: 0;
    position: fixed;
    overflow: hidden;
    height: 31.5%;
}

.mountains div,
.mountains div:after,
.mountains div:before {
    border-radius: 50%;
    position: absolute;
    z-index: 200;
}

.mountains * {
    -webkit-transition: background 3s ease;
    -o-transition: background 3s ease;
    transition: background 3s ease;
    -webkit-transition-delay: 2s;
    -o-transition-delay: 2s;
    transition-delay: 2s;
}

.mountain-top,
.mountain-top * {
    background: #fffcdd;
}

.mountain-top {
    width: 200px;
    height: 90px;
    top: 18px;
    right: 0;
    margin-right: -50px;
}

.mountain-top-1 {
    position: absolute;
    width: 250px;
    height: 80px;
    top: 15px;
    right: 0;
    margin-right: 150px;
}
/*夜晚的山*/
.mountain-top-night {
    background: #614da2;
}

.mountain-middle,
.mountain-middle * {
    background: #fee1cb;
}

.mountain-middle {
    width: 180px;
    height: 120px;
    top: 12px;
    margin-left: 180px;
}

.mountain-middle-1 {
    width: 200px;
    height: 100px;
    top: 3px;
    margin-left: -110px;
}

.mountain-middle-2 {
    width: 220px;
    height: 150px;
    margin-left: -250px;
}

.mountain-middle-night {
    background: #6154a4;
}

.mountain-back,
.mountain-back * {
    background: #fec6b9;
}

.mountain-back {
    width: 180px;
    height: 120px;
    top: 0px;
}

.mountain-back-1 {
    width: 200px;
    height: 100px;
    top: 3px;
    margin-left: 80px;
}

.mountain-back-2 {
    width: 150px;
    height: 80px;
    margin-left: 250px;
}

.mountain-back-night {
    background: #7980c8;
}
/*22.设置云朵图层的位置，定位云朵位置。*/
.cloud,
.cloud:after,
.cloud:before {
    background: #fff;
    position: absolute;
    z-index: 500;
}


.cloud-1 {
    left: 310px;
    top: 50px;
}

.cloud-2 {
    left: 280px;
    top: 150px;
    -webkit-animation-delay: 0.2s;
    animation-delay: 0.2s;
}

.cloud-3 {
    left: 410px;
    top: 190px;
    -webkit-animation-delay: 0.4s;
    animation-delay: 0.4s;
}

.cloud-4 {
    left: 160px;
    top: 120px;
    -webkit-animation-delay: 0.6s;
    animation-delay: 0.6s;
}

.cloud-5 {
    left: 60px;
    top: 170px;
    -webkit-animation-delay: 0.8s;
    animation-delay: 0.8s;
}

.cloud-6 {
    left: 0px;
    top: 100px;
    -webkit-animation-delay: 1s;
    animation-delay: 1s;
}
/*23.绘制云朵*/
.cloud {
    width: 65px;
    height: 12px;
    border-radius: 20px;
    -webkit-animation: cloud 4s infinite;
    animation: cloud 4s infinite;
}
/*24.*/
.cloud:after {
    border-radius: 50%;
    height: 30px;
    left: 27px;
    top: -18px;
    width: 30px;
}
/*25.*/
.cloud:before {
    border-radius: 50%;
    height: 20px;
    left: 12px;
    top: -11px;
    width: 20px;
}
/*26.添加云朵的浮动动画*/
@-webkit-keyframes cloud {
    0% {
        -webkit-transform: translate(0px, 0px);
        transform: translate(0px, 0px);
    }
    25% {
        -webkit-transform: translate(2px, 2px);
        transform: translate(2px, 2px);
    }
    50% {
        -webkit-transform: translate(0px, 0px);
        transform: translate(0px, 0px);
    }
    75% {
        -webkit-transform: translate(-1px, -1px);
        transform: translate(-1px, -1px);
    }
    100% {
        -webkit-transform: translate(0px, 0px);
        transform: translate(0px, 0px);
    }
}

@keyframes cloud {
    0% {
        -webkit-transform: translate(0px, 0px);
        transform: translate(0px, 0px);
    }
    25% {
        -webkit-transform: translate(2px, 2px);
        transform: translate(2px, 2px);
    }
    50% {
        -webkit-transform: translate(0px, 0px);
        transform: translate(0px, 0px);
    }
    75% {
        -webkit-transform: translate(-1px, -1px);
        transform: translate(-1px, -1px);
    }
    100% {
        -webkit-transform: translate(0px, 0px);
        transform: translate(0px, 0px);
    }
}


/*27.加入小星星，并添加闪烁动画，步骤还是和之前一样*/
.stars *,
.stars *:before,
.stars *:after {
    border-radius: 50%;
    background-color: #fff;
    position: absolute;
}

.stars {
    opacity: 0;
    -webkit-transition: opacity 2s ease;
    -o-transition: opacity 2s ease;
    transition: opacity 2s ease;
}

.stars-fade {
    opacity: 1;
    -webkit-transition-delay: 4s;
    -o-transition-delay: 4s;
    transition-delay: 4s;
}

.star-group-1 {
    width: 5px;
    height: 5px;
    left: 225px;
    top: 120px;
    animation: twinkle 2s infinite linear;
}

.star-group-1:before {
    width: 4px;
    height: 4px;
    left: 50px;
    top: 18px;
    opacity: 0.8;
}

.star-group-1:after {
    width: 3px;
    height: 3px;
    left: -35px;
    top: 35px;
    opacity: 1;
}

.star-group-2 {
    width: 5px;
    height: 5px;
    left: 25px;
    top: 175px;
    animation: twinkle 1s infinite linear;
}

.star-group-2:before {
    width: 4px;
    height: 4px;
    left: 40px;
    top: 14px;
    opacity: 0.8;
}

.star-group-2:after {
    width: 3px;
    height: 3px;
    left: 30px;
    top: -40px;
    opacity: 1;
}

.star-group-3 {
    width: 5px;
    height: 5px;
    left: 125px;
    top: 50px;
    animation: twinkle 0.8s infinite linear;
}

.star-group-3:before {
    width: 4px;
    height: 4px;
    left: 50px;
    top: 20px;
    opacity: 0.8;
}

.star-group-3:after {
    width: 3px;
    height: 3px;
    left: 90px;
    top: -20px;
    opacity: 1;
}

.star-group-4 {
    width: 5px;
    height: 5px;
    left: 300px;
    top: 100px;
    animation: twinkle 1.2s infinite linear;
}

.star-group-4:before {
    width: 3px;
    height: 3px;
    left: 80px;
    top: 60px;
    opacity: 0.8;
}

.star-group-4:after {
    width: 3px;
    height: 3px;
    left: 50px;
    top: -20px;
    opacity: 1;
}
/*28.绘制流星及动画*/
@-webkit-keyframes twinkle {
    0% {
        opacity: 1;
    }
    25% {
        opacity: 0.3;
    }
    50% {
        opacity: 0.8;
    }
    75% {
        opacity: 0.5;
    }
    100% {
        opacity: 0.8;
    }
}

@keyframes twinkle {
    0% {
        opacity: 1;
    }
    25% {
        opacity: 0.3;
    }
    50% {
        opacity: 0.8;
    }
    75% {
        opacity: 0.5;
    }
    100% {
        opacity: 0.8;
    }
}

.shooting-star {
    position: absolute;
    background: -webkit-gradient(
            linear,
            left top,
            right top,
            from(rgba(255, 255, 255, 1)),
            to(rgba(255, 255, 255, 0))
    );
    background: -webkit-linear-gradient(
            left,
            rgba(255, 255, 255, 1) 0%,
            rgba(255, 255, 255, 0) 100%
    );
    background: -o-linear-gradient(
            left,
            rgba(255, 255, 255, 1) 0%,
            rgba(255, 255, 255, 0) 100%
    );
    background: linear-gradient(
            to right,
            rgba(255, 255, 255, 1) 0%,
            rgba(255, 255, 255, 0) 100%
    );
    width: 35px;
    height: 3px;
    left: 310px;
    top: 10px;
    -webkit-transform-origin: left;
    -ms-transform-origin: left;
    transform-origin: left;
    -webkit-transform: rotate(-40deg);
    -ms-transform: rotate(-40deg);
    transform: rotate(-40deg);
}

.shooting {
    -webkit-animation: shooting-star 2s 2 ease-in-out;
    animation: shooting-star 2s 2 ease-in-out;
    -webkit-animation-delay: 5s;
    animation-delay: 5s;
}

@-webkit-keyframes shooting-star {
    100% {
        -webkit-transform: rotate(-40deg)translateX(-450px);
        transform: rotate(-40deg)translateX(-450px);
    }
}

@keyframes shooting-star {
    100% {
        -webkit-transform: rotate(-40deg)translateX(-450px);
        transform: rotate(-40deg)translateX(-450px);
    }
}
/*29.设置字体的位置及样式*/
p a:link,
p a:active,
p a:visited {
    color: inherit;
    text-decoration: none;
    border-bottom: 1px dotted;
    border-bottom-color: inherit;
    opacity: 0.6;
}

h1,
p {
    color: #bb7074;
    -webkit-transition: color 3s;
    -o-transition: color 3s;
    transition: color 3s;
    -webkit-transition-delay: 2s;
    -o-transition-delay: 2s;
    transition-delay: 2s;
    text-align: center;
}

h1 {
    margin: 60px 0 10px 0;
    font-size: 30px;
    position: relative;
}


p {
    font-size: 16px;
    line-height: 16px;
    margin: 40px;
    position: relative;
    opacity:0.6;
}


p#subtitle {
    margin-top: 10px;
}

.text-color {
    color: #7980c8;
}
三、JS（index.js） 22. 设置元素间属性转换

js部分主要是元素的变换，日夜交替时，显示或者隐藏某个元素，较为简单

$(function () {
    $('.sun').click(function (e) {
        e.stopPropagation();
        $("html").toggleClass('container-night');
        $(".sky-night").toggleClass('sky-night-fade');
        $("p, h1").toggleClass('text-color');
        $(".ocean-night").toggleClass('ocean-night-fade');
        $(".moon").toggleClass('moon-fade');
        $(".ocean").toggleClass('animation-stop');
        $(".bird").toggleClass('birds-fly');
        $(".boat").toggleClass('boat-sail');
        $(".mountain-top, .mountain-top >*").toggleClass('mountain-top-night');
        $(".mountain-middle, .mountain-middle >*").toggleClass('mountain-middle-night');
        $(".mountain-back, .mountain-back >*").toggleClass('mountain-back-night');
        $(".cloud").delay(2500).fadeToggle(2500);
        $(".stars").toggleClass('stars-fade');
        $(".shooting-star").toggleClass('shooting');

        var angle = ($('.sun-container').data('angle') + 360) || 360;
        $('.sun-container').css({
            'transform': 'rotate(' + angle + 'deg)'
        });
        $('.sun-container').data('angle', angle);

    });
});

至此，我们的纯代码绘制动画就完成啦！
运行效果：

总结

Good morning, and in case I don’t see ya, good afternoon, good evening, and good night!
感谢大家支持！再次祝大家早安晚安，每日安好鸭！

欢迎分享，转载请注明来源：内存溢出

原文地址: http://outofmemory.cn/web/1299036.html

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