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330px;
height: 30px;
margin: 100px auto 0;
padding-left: 10px;
background-image: url(images/bg.jpg);
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background-image: url(images/libg.jpg);
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float: left;
margin-right: 10px;
position: relative;
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.wrap a {
display: block;
height: 30px;
100px;
text-decoration: none;
color: #000;
line-height: 30px;
text-align: center;
}
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position: absolute;
top: 30px;
display: none;
}
</style>
<script src="jquery-1.12.2.js"></script>
<script>
$(function () {
//获取.wrap下面的ul中的li,注册鼠标进入和离开的事件
$(".wrap>ul>li").mouseover(function () {
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</head>
<body>
<div class="wrap">
<ul>
<li>
<a href="javascript:void(0);">帅哥系列</a>
<ul>
<li><a href="javascript:void(0);">乔峰</a></li>
<li><a href="javascript:void(0);">张无忌</a></li>
<li><a href="javascript:void(0);">郭靖</a></li>
</ul>
</li>
<li>
<a href="javascript:void(0);">美女系列</a>
<ul>
<li><a href="javascript:void(0);">柳 岩</a></li>
<li><a href="javascript:void(0);">杨 幂</a></li>
<li><a href="javascript:void(0);">萝 拉</a></li>
</ul>
</li>
<li>
<a href="javascript:void(0);">渣男妇腐女</a>
<ul>
<li><a href="javascript:void(0);">凤姐</a></li>
<li><a href="javascript:void(0);">助教</a></li>
<li><a href="javascript:void(0);">导师</a></li>
</ul>
</li>
</ul>
</div>
</body>
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