清华大佬耗费三个月吐血整理的几百G的资源，免费分享！....>>>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>ssssss</title>
<style type="text/css">
* {
margin: 0px;
padding: 0px;
}
body {
background-color: #434343;
}
nav {
margin: 10px 10px;
float: left;
}
.list ul {
float: left;
position: relative;
}
.list li {
list-style: none;
}
.list li li {
float: left;
}
.list a {
display: block;
text-decoration: none;
color: #eee;
background-color: orange;
padding: 5px 10px;
}
.list a:hover {
color: #948;
-webkit-transition: color 1s ease-out;
}
.list a:active {
background-color: #238;
-webkit-transition: all 1s ease;
transition: all 1s ease;
}
.list li + li {
border-top: 3px solid transparent;
}
.list li:hover > div.child-menu {
display: block;
position: absolute;
left: 100%;
top: 0;
margin-left: 3px;
}
.list li div.child-menu {
display: none;
}
div.child-menu {
width: 600px;
background-color: pink;
}
div.child-menu a {
background-color: transparent;
transition: transform 2s;
-webkit-transition: -webkit-transform 2s;
}
div.child-menu a:hover {
transform: rotate(180deg);
-webkit-transform: rotate(180deg);
}
div.child-menu li {
float: left;
}
div.child-menu img {
clear: both;
max-width: 90%;
}
</style>
</head>
<body>
<nav class="list">
<ul>
<li><a href="#">1111111111111111111</a></li>
<li><a href="#">1111111111111111111</a></li>
<li><a href="#">1111111111111111111</a>
<div class="child-menu">
<ul>
<li><a href="#">222222222</a></li>
<li><a href="#">222222222</a></li>
<li><a href="#">222222222</a></li>
<li><a href="#">222222222</a></li>
<li><a href="#">222222222</a></li>
<li><a href="#">222222222</a></li>
</ul>
<img src="images/1.jpg" alt="advertisment" />
</div>
</li>
<li><a href="#">1111111111111111111</a></li>
<li><a href="#">1111111111111111111</a></li>
<li><a href="#">1111111111111111111</a></li>
</ul>
</nav>
</body>
</html>