<!DOCTYPE HTML>
<html>
<head>
<title>改变滚动条的颜色</title>
<style>
.inner{
width: 265px;
height: 400px;
position: absolute;
top: 33px;
left: 13px;
/*cursor: pointer;*/
overflow:hidden;
}
.innerbox{
overflow-x: hidden;
overflow-y: auto;
color: #000;
font-size: .7rem;
height: 100%;
}
/*核心代码*/
.innerbox::-webkit-scrollbar {/*滚动条整体样式*/
width: 4px; /*高宽分别对应横竖滚动条的尺寸*/
height: 4px;
}
.innerbox::-webkit-scrollbar-thumb {/*滚动条里面小方块*/
border-radius: 5px;
-webkit-box-shadow: inset 0 0 5px rgba(0,0,0,0.2);
background: rgba(0,0,0,0.2);
}
.innerbox::-webkit-scrollbar-track {/*滚动条里面轨道*/
-webkit-box-shadow: inset 0 0 5px rgba(0,0,0,0.2);
border-radius: 0;
background: rgba(0,0,0,0.1);
}
/*核心代码*/
</style>
</head>
<body>
<div class="inner">
<div class="innerbox">
<p style="height:200px;">111</p>
<p style="height:600px;">222</p>
<p>333</p>
</div>
</div>
</body>
</html>
原文：https://www.cnblogs.com/baixiaoxiao/p/10914201.html