<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<style>
ul{
width: 150px;
height: 20px;
margin: 0 auto;
}
ul li{
width: 10px;
height: 10px;
border: 2px solid transparent;
float: left;
background-color: #ccc;
margin-left: 10px;
border-radius: 50%;
transition: all 1s;
list-style: none;
}
ul li:hover{
border: 2px solid red;
transform: scale(1.3);
background-color: transparent;
}
</style>
</head>
<body>
<ul>
<li></li>
<li></li>
<li></li>
<li></li>
<li></li>
</ul>
</body>
</html>
原图：
移上去：
ul { width: 150px; height: 20px; margin: 0 auto }
ul li { width: 10px; height: 10px; border: 2px solid transparent; float: left; background-color: #ccc; margin-left: 10px; list-style: none }
ul li:hover { border: 2px solid red; background-color: transparent }
原文地址：https://www.cnblogs.com/yuanyuan-1994/p/8552355.html