<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>图片水平垂直居中</title>
<style type="text/css">
.warp{
width: 600px;
height: 600px;
width: 0 auto;
border: 1px solid;
text-align: center;
}
.warp:after{
content: "";
display: inline-block;
height: 100%;
vertical-align: middle;
}
.warp img{
vertical-align: middle;
}
</style>
</head>
<body>
<div class="warp">
<img src="img/logo.png" />
</div>
</body>
</html>
原文：https://www.cnblogs.com/yitiansanchangyu/p/12318008.html