<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>未知图片宽高居中</title>
<style type="text/css">
.div-1 {
width: 200px;
height: 200px;
border: 1px solid red;
text-align: center;
display: table-cell;
vertical-align: middle;
}
</style>
</head>
<body>
<div class="div-1">
<img src="img/11111.jpg" />
</div>
</body>
</html>