ul{
list-style: none;
font-size: 24px;
font-weight: bold;
}
a{
text-decoration: none;
}
li{
background: linear-gradient(to left,orange,red);
width: 150px;
margin: 5px;
padding: 10px 10px;
border-radius: 5px;
}
#ul1 li{
float: left;
}
li:hover{
background: linear-gradient(to right,orange,red);
transform: rotate(15deg);
transform-origin: left top;
}
hr{
clear: both;
margin-top: 50px;
border:3px dotted green;
}
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>旋转菜单</title>
<link rel="stylesheet" href="style5.css" type="text/css">
</head>
<body>
<div>
<ul id="ul1">
<li><a href="#">aaaa</a></li>
<li><a href="#">bbbb</a></li>
<li><a href="#">cccc</a></li>
<li><a href="#">dddd</a></li>
</ul>
<br><br>
<hr>
<ul id="ul2">
<li><a href="#">aaaa</a></li>
<li><a href="#">bbbb</a></li>
<li><a href="#">cccc</a></li>
<li><a href="#">dddd</a></li>
</ul>
</div>
</body>
</html>
原文：https://www.cnblogs.com/houweidong/p/9728931.html