Html
    Css
    Js
@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;
}

                        
↑上面代码改变,会自动显示代码结果 jQuery调用版本:1.11.3
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多级下拉列表动画下拉

重要的代码就在javascript中  其他的html或者css都是小事情,解决了鼠标移出去,动画还在一直实现的bug

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