原始代码： center.html ： !DOCTYPE htmlhtml lang=Zhhead meta charset=UTF-8 meta name=viewport content=width=device-width, initial-scale=1.0 titleCenter/title link rel=stylesheet href=center.css/headbody div class=father div class=son/
原始代码：
center.html：
<!DOCTYPE html>
<html lang="Zh">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Center</title>
<link rel="stylesheet" href="center.css">
</head>
<body>
<div class="father">
<div class="son"></div>
</div>
</body>
</html>
center.css：
body {
background-color: #6ed0ff;
}
.father {
background-color: #be33ec;
border-radius: 20px;
box-shadow: 0 0 15px rgb(0, 0, 0);
margin: 100px auto;
width: 300px;
height: 300px;
}
.son {
background-color: #fcff00;
border-radius: 20px;
box-shadow: 0 0 10px rgb(0, 0, 0);
width: 100px;
height: 100px;
}
原始效果：
实现子盒子相对于父盒子垂直居中效果：
1. grid
.father {
display: grid;
}
.son {
align-self: center;
justify-self: center;
}
2. absolute + 负margin
.father {
position: relative;
}
.son {
position: absolute;
left: 50%;
top: 50%;
margin-left: -50px;
margin-top: -50px;
}
3. absolute + transform
.father {
position: relative;
}
.son {
position: absolute;
left: 50%;
top: 50%;
transform: translate(-50%, -50%);
}
4. absolute + margin: auto
.father {
position: relative;
}
.son {
position: absolute;
left: 0;
right: 0;
top: 0;
bottom: 0;
margin: auto;
}
5. flex
.father {
display: flex;
justify-content: center;
align-items: center;
}
6. margin+transfrom
.father {
overflow: hidden;
}
.son {
margin: 50% auto;
transform: translateY(-50%);
}
7. table-cell
.father {
display: table-cell;
text-align: center;
vertical-align: middle;
}
.son {
display: inline-block;
}
8. inline-block + vertical-align
.father {
text-align: center;
line-height: 300px;
}
.son {
display: inline-block;
vertical-align: middle;
}
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