失眠网 > css二级横向导航条纯CSS实现的横向二级导航菜单(无js兼容性强)

css二级横向导航条纯CSS实现的横向二级导航菜单(无js兼容性强)

时间：2022-11-17 23:27:41

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纯CSS实现，无JavaScript，效果不错，实用性强，兼容各种浏览器！

第一步：

下载源代码及背景图片

第二步：

在网页

区添加样式定义

[code]

/* ================================================================

This copyright notice must be untouched at all times.

The original version of this stylesheet and the associated (x)html

is available at //www.cssplay.co.uk/menus/drop_variations.html

This stylesheet and the assocaited (x)html may be modified in any

way to fit your requirements.

=================================================================== */

/* common styling */

/* Set up the default font and ovrall size to include image */

body {

background: #fff;

font-family: "Lucida Grande", Helvetica, Arial, sans-serif;

font-size: 12px;

}

/* for this demo only */

#nav {margin:20px 0 80px 0;}

/* the styling */

#nav {float:left; padding-left:10px; width:740px; height:auto;background:#d1e1ce url("bg.gif") repeat-x bottom;}

#nav .select, #nav .current {margin:2.6em 0 0 0; padding:0; list-style:none; display:block; float:left;}

#nav .sub {margin:0; padding:0; list-style:none;}

#nav li {display:block; float:left; margin:0; padding:0; position:relative; z-index:100;}

#nav .current li {z-index:50;}

#nav .select a,

#nav .current a {display:block; height:2.5em; float:left; width:100px; background:url("left_both.gif") no-repeat left top; padding:0 0 0 9px; border-bottom:1px solid #765; text-decoration:none; font-weight:bold; line-height:2.4em; white-space:nowrap;}

/* calculate the required widths of the top level */

#nav .one a {width:10em;}

#nav .two a {width:19em;}

#nav .three a {width:9.5em;}

#nav .four a {width:9em;}

#nav .select a b,

#nav .current a b {height:100%; display:block; background:url("right_both.gif") no-repeat right top; padding:0 15px 0 6px; color:#553;}

#nav .sub {display:none;}

/* for IE5.5 and IE6 only */

#nav table {position:absolute; border-collapse:collapse; left:0; top:0; font-size:1em;}

#nav .select a:hover b {color:#000; cursor:pointer;}

#nav .current a {background-position:0 -150px; border-color:#fff;}

#nav .current a b {background-position:100% -150px; color:#000;}

#nav .sub li a:hover,

#nav .select a:hover .sub li a:hover,

#nav .select li:hover .sub li a:hover {border-color:#aba; background:#d1e1ce; color:#000;}

#nav .current .sub .current_sub a,

#nav .current .sub a:hover {border-color:#aba; background:#d1e1ce; color:#000;}

#nav .current .sub,

#nav .select a:hover .sub,

#nav .select li:hover .sub {display:block; position:absolute; width:730px; top:2.5em; background:#fff; margin-top:1px; padding:10px 0 20px 0;}

* html #nav .current .sub, * html #nav .select a:hover .sub {margin-top:0; margin-t\op:1px;}

#nav .current .sub li a,

#nav .select a:hover .sub li a,

#nav .select li:hover .sub li a {display:inline; background:#fff; border:1px solid #ddd; padding:0 10px; margin:0 10px 0 0; width:auto; white-space:nowrap; font-weight:normal; font-size:0.9em; height:2em; line-height:1.9em;}

#nav .select a:hover,

#nav li:hover a {background-position:0% -150px; border-color:#fff;}

#nav .select a:hover b,

#nav .select li:hover a b {background-position:100% -150px; border-color:#fff; color:#000;}

/* calculate the left edge position of each sub level */

#nav .one .sub {left:0;}

#nav .two .sub {left:-10em; margin-left:-9px;}

#nav .three .sub {left:-29em; margin-left:-18px;}

* html #nav .three .sub {margin-left:-9px; marg\in-left:-18px;}

#nav .four .sub {left:-38.5em; margin-left:-27px;}

* html #nav .four .sub {margin-left:-18px; marg\in-left:-27px;}

[/code]