模仿网址：https://chaoshi.jd.com/（点击即可到达，参考页面布局）
模仿的部分图片：
参考代码学习模仿：
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Nearth</title>
<script src="jquery-3.3.1.min.js" type="text/javascript" charset="utf-8"></script>
<style type="text/css">
*{
margin:0px;
padding: 0px;
background-color: aquamarine;
}
ul{
list-style: none;
}
.cls{
width:330px;
height:30px;
margin:100px auto 0;
padding-left:10px;
}
.cls ul li{
float:10px;
margin-right:10px;
position: relative;
}
.cls a{
display: block;
height:30px;
width:100px;
text-decoration: none;
color:#000;
line-height:30px;
text-align: center;
float:left;
}
.cls li ul{
position: absolute;
top:30px;
display: none;
}
img{
height: 300px;
width:300px;
}
</style>
<script type="text/javascript">
$(function(){
$(".cls>ul>li").mouseover(function(){
$(this).children("ul").stop().show(500);
});
$(".cls>ul>li").mouseout(function(){
$(this).children("ul").stop().hide(500);
});
})
</script>
</head>
<body>
<h1>下拉菜单栏案列</h1>
<hr >
<div class="cls">
<ul>
<li>
<a href="javascript:void(0);">帅哥系列</a>
<ul>
<li><a href="javascript:void(0)"><img src="1.jpg" ></a></li>
</ul>
</li>
<li>
<a href="javascript:void(0);">美女系列</a>
<ul>
<li><a href="javascript:void(0)"><img src="2.jpg" ></a></li>
</ul>
</li>
<li>
<a href="javascript:void(0);">渣男腐女</a>
<ul>
<li><a href="javascript:void(0)"><img src="3.jpg" ></a></li>
</ul>
</li>
</ul>
</div>
</body>
</html>
把整体的每一个功能做出来，然后合并···············································
