<html>
<head>
<meta charset="utf-8"/>
<title>Loading</title>
<style>
.spinner {
margin: 100px auto
width: 60px
height: 60px
text-align: center
font-size: 10px
}
.spinner >div {
background-color: #67CF22
height: 100%
width: 6px
display: inline-block
-webkit-animation: stretchdelay 1.2s infinite ease-in-out
animation: stretchdelay 1.2s infinite ease-in-out
}
.spinner .rect2 {
-webkit-animation-delay: -1.1s
animation-delay: -1.1s
}
.spinner .rect3 {
-webkit-animation-delay: -1.0s
animation-delay: -1.0s
}
.spinner .rect4 {
-webkit-animation-delay: -0.9s
animation-delay: -0.9s
}
.spinner .rect5 {
-webkit-animation-delay: -0.8s
animation-delay: -0.8s
}
@-webkit-keyframes stretchdelay {
0%, 40%, 100% { -webkit-transform: scaleY(0.4) }
20% { -webkit-transform: scaleY(1.0) }
}
@keyframes stretchdelay {
0%, 40%, 100% {
transform: scaleY(0.4)
-webkit-transform: scaleY(0.4)
} 20% {
transform: scaleY(1.0)
-webkit-transform: scaleY(1.0)
}
}
</style>
</head>
<body>
<div class="spinner">
<div class="rect1"></div>
<div class="rect2"></div>
<div class="rect3"></div>
<div class="rect4"></div>
<div class="rect5"></div>
</div>
</body>
</html>
在html5中video元素的preload属性用于当视频加载时显示播。根据相关网站查询得知，preload属性，主要用于设置视频在页面加载的过程中，视频是否自动预加载。当设置了preload为“auto”时，视频在打开页面时就开始预加载。欢迎分享，转载请注明来源：内存溢出
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