<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
.father {
background-color: black;
position: relative;
}
.son {
background-color: green;
height: 200px;
width: 200px;
position: absolute;
left: 50%;
top: 50%;
transform: translate(-50%, -50%);//思路和方法三很一样，使用css3位移自身宽高的一半
top: 0;
right: 0;
bottom: 0;
left: 0;
margin: auto;
left: 50%;
top: 50%;
margin-left: -100px; //宽的一半
margin-top: -100px; //高的一半
}
</style>
</head>
<body>
<div class="fater">
<div class="son">1</div>
</div>
</body>
</html>
Processed:
0.010, SQL:
9
