html
<div id="middle">
<div id="allnav">
<div id="nav">
<ul>
<li class="menuList"><a href="#" class="category">全部商品分类</a>
<ul>
<li><a href="###">美食</a></li>
<li><a href="###">旅游</a></li>
<li><a href="###">酒店</a></li>
<li><a href="###">电影</a></li>
<li><a href="###">KTV</a></li>
<li><a href="###">时尚</a></li>
<li><a href="###">生活服务</a></li>
</ul>
</li>
<li><a href="###">首页</a></li>
<li><a href="###">团购</a></li>
<li class="menuList"><a href="###">美食</a>
<ul>
<li><a href="###">美食</a></li>
<li><a href="###">旅游</a></li>
<li><a href="###">酒店</a></li>
<li><a href="###">电影</a></li>
<li><a href="###">KTV</a></li>
<li><a href="###">时尚</a></li>
<li><a href="###">生活服务</a></li>
</ul>
</li>
<li><a href="###">电影</a></li>
<li><a href="###">KTV</a></li>
<li><a href="###">酒店订票</a></li>
<li><a href="###">购物</a></li>
<li><a href="###">品牌特卖</a></li>
</ul>
</div>
</div>
</div>
css
@charset "utf-8";
/* CSS Document */
/*中间导航*/
#nav {
width:985px;
/*内容固定宽度*/
margin:0px auto;
/*固定宽度且居中*/
height:39px;
}
#middle #allnav {
width:100%;
/*自适应宽度，占据整个屏幕*/
height:39px;
background-color:#ff7701;
}
#nav ul li {
float:left;
}
#nav ul li a {
float:left;
/*兼容ie6*/
padding:0px 16px;
height:39px;
line-height:39px;
display:block;
font-weight:bold;
font-size:15px;
color:white;
}
#nav ul li a:hover {
background-color:#ff8c00
}
#nav ul li a.category {
background-image:url(../images/arrow-down.gif);
background-repeat:no-repeat;
background-position:right;
}
/*导航菜单的二级菜单用到定位*/
#nav ul li.menuList {
position:relative;
}
#nav ul li.menuList ul {
background-color:#ff7701;
text-align:center;
top:39px;
/*脱离原文档流*/
left:0px;
position:absolute;
width:123px;
display:none;
}
#nav ul li.menuList:hover ul {
/*display:block;
*/
}
#nav ul li ul li {
float:none;
}
#nav ul li ul li a {
float:none
}
#middle #content {
width:985px;
margin:20px auto;
}
/*中间第二块：订单表*/
#middle #ordertable {
padding:20px;
/*和边框有间隔*/
border:1px solid #dedede;
overflow:hidden;
/*解决父元素的浮动塌陷*/
}
#ordertable ul li {
float:left;
height:78px;
/*和购物车图像的高度一致*/
font:bold 25px/78px Verdana,Geneva,sans-serif;
}
#ordertable ul li.step {
background:url(../images/cart/step1.jpg) no-repeat center;
width:679px;
margin-left:30px;
}
#ordertable .btn {
border:1px solid #dedede;
background-color:white;
width:16px;
height:16px;
}
#ordertable .txt {
width:60px;
height:30px;
border:1px solid #dedede;
text-align:center;
font:bold 15px/30px Verdana,Geneva,sans-serif;
}
#ordertable .txt:hover {
border:1px solid red
}
#ordertable table {
border:1px solid #dedede;
border-collapse:collapse;
width:100%;
clear:both;
}
#ordertable table tr {
height:50px;
border-bottom:1px dashed #dedede;
}
#ordertable table td,#ordertable th {
text-align:center;
vertical-align:central;
}
/*对单元格的宽度细调*/
#ordertable table td.item {
width:260px;
height:60px;
text-align:left;
}
#ordertable table td.item img {
margin-right:10px;
vertical-align:baseline;
}
/*汇总的一行*/
#ordertable table tr td.cal {
text-align:right;
}
#ordertable table tr td.cal span {
font:bold 25px Verdana,Geneva,sans-serif;
color:orange;
}
/*提交订单的按钮水平靠右*/
#ordertable p {
text-align:right;
}
/*最近浏览*/
#middle #lastview {
margin-top:20px;
border:1px solid #dedede;
padding:20px;
overflow:hidden;
/*浮动塌陷*/
}
#lastview dl {
float:left;
height:222px;
width:210px;
margin-right:20px;
}
#lastview dl dd {
line-height:25px;
}
#lastview dl dd span {
font:bold 15px Verdana,Geneva,sans-serif;
color:#C30;
}
#lastview dl dd.price {
float:left;
}
#lastview dl dd.num {
float:right
}
#lastview dl dd.add {
clear:both;
float:right;
}
#lastview dl dd.add a {
color:#F90
}
#lastview dl dd.add a:hover {
text-decoration:underline;
}
#lastview dl dd.add span {
background:url(../images/icon.gif) 0px -85px;
width:18px;
height:33px;
display:block;
float:left;
margin-top:2px;
}
body {
font-size:12px;
}
* {
margin:0px;
padding:0px;
}
a img {
border:none
}
a {
text-decoration:none;
color:Black;
}
a:hover {
color:Orange;
}
ul {
list-style:none;
}
js
$(function() {
$("#nav ul li").hover(function() {
$(this).children("ul").stop().slideDown();
},
function() {
$(this).children("ul").stop().slideUp();
});
});
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