版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.csdn.net/wangxinxin1992816/article/details/84401753
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>垂直水平居中</title>
</head>
<style>
/*垂直水平居中方法一：position*/
/*.parent{
width: 800px;
height: 600px;
background: red;
position: relative;
}
.child{
width: 300px;
height: 200px;
background: black;
position: absolute;
top: 50%;
left: 50%;
margin-top: -100px;
margin-left: -150px;
}*/
/*垂直水平居中方法二：flex*/
/*.parent{
width: 800px;
height: 600px;
background: red;
display: flex;
align-items:center;
justify-content:center;
}
.child{
width: 300px;
height: 200px;
background: black;
}*/
/*垂直水平居中方法二：transform*/
/*.parent{
width: 800px;
height: 600px;
background: red;
position: relative;
}
.child{
width: 300px;
height: 200px;
background: black;
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%,-50%);
}*/
/*垂直水平居中方法四：table*/
.wrp {
width: 500px;
height: 500px;
background-color: #0022df;/* 外：蓝色 */
display: table;
}
.subwrapper {
display: table-cell;
vertical-align: middle;
}
.content {
width: 250px;
height: 250px;
background-color: #aa0021;/* 外：红色 */
margin: 0 auto;
}
</style>
<body>
<!--<div class="parent">
<div class="child">
</div>
</div>-->
<div class="wrp">
<div class="subwrapper">
<div class="con content">
</div>
</div>
</div>
</body>
</html>