html二级菜单怎么做_随笔

首页我们打看dreamweaver或其它编辑器，创建一个名为nav的导航菜单

<ul>

</ul>

</div>

如下图所示：

现在我们为nav添加样式,首先去掉默认的margin和padding，再去掉<ul><li>标签的list-style样式和<a>标签的默认下划线。接下来再添加适当的样式（根据实际需要添加）进行美化，如一下样式：

* { margin:0padding:0}

ul, li { list-style:none}

a { text-decoration:none}

.nav { border:2px solid #cccborder-right:noneoverflow:hiddenfloat:leftmargin:100px 0 0 300px}

.nav ul li { float:left}

.nav ul li a { width:120pxheight:40pxtext-align:centerline-height:40pxdisplay:blockborder-right:2px solid #cccbackground:#eeecolor:#666}

.nav ul li a:hover{ color:#f00}

</style>

打开页面预览效果

像这样，一个菜单横向菜单就建好了，下来我们给栏目一，栏目二，栏目三，添加二级下拉菜单

<ul>

<ul>

</ul>

</li>

<ul>

</ul>

</li>

<ul>

</ul>

</li>

</ul>

</div>

添加完二级栏目后，现在我们开始添加css样式，首先给<li>标签下的<ul>标签添加相对定位，再去除之下<li>标签的做浮动样式，再适当修改<a>标签，如一下样式：

.nav ul li ul { position:absolute}

.nav ul li ul li { float:none}

.nav ul li ul li a { border-right:noneborder-top:1px dotted #cccbackground:#f5f5f5}

我们刷新页面预览下效果

接下来我们隐藏掉二级下来菜单，并给它添加鼠标滑动效果，使得当鼠标滑动到主栏目时，二级下来菜单显示，样式如下：

.nav ul li ul { position:absolutedisplay:none}

.nav ul li ul li { float:none}

.nav ul li ul li a { border-right:noneborder-top:1px dotted #cccbackground:#f5f5f5}

.nav ul li:hover ul{ display:block}

再次预览效果，如下图所示：

至此，横向二级下拉菜单就制作完成了，这里附加上全部代码，以方便各位朋友参考，感谢各位朋友的浏览。

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<head>

<title>横排二级下拉菜单</title>

* { margin:0padding:0}

ul, li { list-style:none}

a { text-decoration:none}

.nav { border:2px solid #cccborder-right:noneoverflow:hiddenfloat:leftmargin:100px 0 0 300px}

.nav ul li { float:left}

.nav ul li a { width:120pxheight:40pxtext-align:centerline-height:40pxdisplay:blockborder-right:2px solid #cccbackground:#eeecolor:#666}

.nav ul li a:hover{ color:#f00}

.nav ul li ul { position:absolutedisplay:none}

.nav ul li ul li { float:none}

.nav ul li ul li a { border-right:noneborder-top:1px dotted #cccbackground:#f5f5f5}

.nav ul li:hover ul{ display:block}

</style>

</head>

<body>

<ul>

<ul>

</ul>

</li>

<ul>

</ul>

</li>

<ul>

</ul>

</li>

</ul>

</div>

</body>

</html>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<head>

<title>二级dropdownd出菜单--A CROSS BROWSER DROP DOWN CASCADING VALIDATING MENU</title>

/* common styling */

/* set up the overall width of the menu div, the font and the margins */

.menu {

font-family: arial, sans-serif

width:750px

margin:0

margin:50px 0

}

/* remove the bullets and set the margin and padding to zero for the unordered list */

.menu ul {

padding:0

margin:0

list-style-type: none

}

/* float the list so that the items are in a line and their position relative so that the drop down list will appear in the right place underneath each list item */

.menu ul li {

float:left

position:relative

}

/* style the links to be 104px wide by 30px high with a top and right border 1px solid white. Set the background color and the font size. */

.menu ul li a, .menu ul li a:visited {

display:block

text-align:center

text-decoration:none

width:104px

height:30px

color:#000

border:1px solid #fff

border-width:1px 1px 0 0

background:#c9c9a7

line-height:30px

font-size:11px

}

/* make the dropdown ul invisible */

.menu ul li ul {

display: none

}

/* specific to non IE browsers */

/* set the background and foreground color of the main menu li on hover */

.menu ul li:hover a {

color:#fff

background:#b3ab79

}

/* make the sub menu ul visible and position it beneath the main menu list item */

.menu ul li:hover ul {

display:block

position:absolute

top:31px

left:0

width:105px

}

/* style the background and foreground color of the submenu links */

.menu ul li:hover ul li a {

display:block

background:#faeec7

color:#000

}

/* style the background and forground colors of the links on hover */

.menu ul li:hover ul li a:hover {

background:#dfc184

color:#000

}

</style>

<!--[if lte IE 6]>

/* styling specific to Internet Explorer IE5.5 and IE6. Yet to see if IE7 handles li:hover */

/* Get rid of any default table style */

table {

border-collapse:collapse

margin:0

padding:0

}

/* ignore the link used by 'other browsers' */

.menu ul li a.hide, .menu ul li a:visited.hide {

display:none

}

/* set the background and foreground color of the main menu link on hover */

.menu ul li a:hover {

color:#fff

background:#b3ab79

}

/* make the sub menu ul visible and position it beneath the main menu list item */

.menu ul li a:hover ul {

display:block

position:absolute

top:32px

left:0

width:105px

}

/* style the background and foreground color of the submenu links */

.menu ul li a:hover ul li a {

background:#faeec7

color:#000

}

/* style the background and forground colors of the links on hover */

.menu ul li a:hover ul li a:hover {

background:#dfc184

color:#000

}

</style>

<![endif]-->

</head>

<body>

<ul>

<li><a class="hide" href="../menu/index.html">DEMOS</a>

<!--[if lte IE 6]>

<a href="../menu/index.html">DEMOS

<![endif]-->

<ul>

<li><a href="../menu/zero_dollars.html" title="The zero dollar ads page">zero dollars</a></li>

<li><a href="../menu/embed.html" title="Wrapping text around images">wrapping text</a></li>

<li><a href="../menu/form.html" title="Styling forms">styled form</a></li>

<li><a href="../menu/nodots.html" title="Removing active/focus borders">active focus</a></li>

<li><a href="../menu/shadow_boxing.html" title="Multi-position drop shadow">shadow boxing</a></li>

<li><a href="../menu/old_master.html" title="Image Map for detailed information">image map</a></li>

<li><a href="../menu/bodies.html" title="fun with background images">fun backgrounds</a></li>

<li><a href="../menu/fade_scroll.html" title="fade-out scrolling">fade scrolling</a></li>

<li><a href="../menu/em_images.html" title="em size images compared">em sized images</a></li>

</ul>

<!--[if lte IE 6]>

</td></tr></table>

</a>

<![endif]-->

</li>

<li><a class="hide" href="index.html">MENUS</a>

<!--[if lte IE 6]>

<a href="index.html">MENUS

<![endif]-->

<ul>

<li><a href="spies.html" title="a coded list of spies">spies menu</a></li>

<li><a href="vertical.html" title="a horizontal vertical menu">vertical menu</a></li>

<li><a href="expand.html" title="an enlarging unordered list">enlarging list</a></li>

<li><a href="enlarge.html" title="an unordered list with link images">link images</a></li>

<li><a href="cross.html" title="non-rectangular links">non-rectangular</a></li>

<li><a href="jigsaw.html" title="jigsaw links">jigsaw links</a></li>

<li><a href="circles.html" title="circular links">circular links</a></li>

</ul>

<!--[if lte IE 6]>

</td></tr></table>

</a>

<![endif]-->

</li>

<li><a class="hide" href="../layouts/index.html">LAYOUTS</a>

<!--[if lte IE 6]>

<a href="../layouts/index.html">LAYOUTS

<![endif]-->

<ul>

<li><a href="../layouts/bodyfix.html" title="Cross browser fixed layout">Fixed 1</a></li>

<li><a href="../layouts/body2.html" title="Cross browser fixed layout">Fixed 2</a></li>

<li><a href="../layouts/body4.html" title="Cross browser fixed layout">Fixed 3</a></li>

<li><a href="../layouts/body5.html" title="Cross browser fixed layout">Fixed 4</a></li>

<li><a href="../layouts/minimum.html" title="A simple minimum width layout">minimum width</a></li>

</ul>

<!--[if lte IE 6]>

</td></tr></table>

</a>

<![endif]-->

</li>

<li><a class="hide" href="../boxes/index.html">BOXES</a>

<!--[if lte IE 6]>

<a href="../boxes/index.html">BOXES

<![endif]-->

<ul>

<li><a href="spies.html" title="a coded list of spies">spies menu</a></li>

<li><a href="vertical.html" title="a horizontal vertical menu">vertical menu</a></li>

<li><a href="expand.html" title="an enlarging unordered list">enlarging list</a></li>

<li><a href="enlarge.html" title="an unordered list with link images">link images</a></li>

<li><a href="cross.html" title="non-rectangular links">non-rectangular</a></li>

<li><a href="jigsaw.html" title="jigsaw links">jigsaw links</a></li>

<li><a href="circles.html" title="circular links">circular links</a></li>

</ul>

<!--[if lte IE 6]>

</td></tr></table>

</a>

<![endif]-->

</li>

<li><a class="hide" href="../mozilla/index.html">MOZILLA</a>

<!--[if lte IE 6]>

<a href="../mozilla/index.html">MOZILLA

<![endif]-->

<ul>

<li><a href="../mozilla/cascade.html" title="A cascading menu">cascading menu</a></li>

<li><a href="../mozilla/content.html" title="Using content:">content:</a></li>

<li><a href="../mozilla/moxbox.html" title=":hover applied to a div">mozzie box</a></li>

<li><a href="../mozilla/rainbow.html" title="I can build a rainbow">rainbow box</a></li>

<li><a href="../mozilla/snooker.html" title="Snooker cue">snooker cue</a></li>

<li><a href="../mozilla/target.html" title="Target Practise">target practise</a></li>

<li><a href="../mozilla/splittext.html" title="Two tone headings">two tone headings</a></li>

<li><a href="../mozilla/shadow_text.html" title="Shadow text">shadow text</a></li>

</ul>

<!--[if lte IE 6]>

</td></tr></table>

</a>

<![endif]-->

</li>

<li><a class="hide" href="../ie/index.html">EXPLORER</a>

<!--[if lte IE 6]>

<a href="../ie/index.html">EXPLORER

<![endif]-->

<ul>

<li><a href="../ie/exampleone.html" title="Example one">example one</a></li>

<li><a href="../ie/weft.html" title="Weft fonts">weft fonts</a></li>

<li><a href="../ie/exampletwo.html" title="Vertical align">vertical align</a></li>

</ul>

<!--[if lte IE 6]>

</td></tr></table>

</a>

<![endif]-->

</li>

<li><a class="hide" href="../opacity/index.html">OPACITY</a>

<!--[if lte IE 6]>

<a href="../opacity/index.html">OPACITY

<![endif]-->

<ul>

<li><a href="../opacity/colours.html" title="colour wheel">opaque colours</a></li>

<li><a href="../opacity/picturemenu.html" title="a menu using opacity">opaque menu</a></li>

<li><a href="../opacity/png.html" title="partial opacity">partial opacity</a></li>

<li><a href="../opacity/png2.html" title="partial opacity II">partial opacity II</a></li>

</ul>

<!--[if lte IE 6]>

</td></tr></table>

</a>

<![endif]-->

</li>

</ul>

</div>

</body>

</html>

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原文地址: http://outofmemory.cn/zaji/6277689.html

html二级菜单怎么做

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