盒子水平垂直居中
这篇总结主要讲解了盒子水平垂直居中的几种方法？
方法1：子绝父相+margin:left/top; 固定宽高的盒子居中
方法2：子绝父相+transfrom
方法3：子绝父相(子盒子上下左右都赋值为0)+margin:auto;
方法4：flex布局，给父盒子添加flex布局，同时在弹性容器(父盒子)内设置主轴居中，侧轴居中
代码如下：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width,
initial-scale=1.0">
<title>Document</title>
<style>
* {
margin: 0;
padding: 0;
}
/* 方法1
.father {
position: relative;
margin: 0 auto;
width: 200px;
height: 200px;
background-color: pink;
}
.son {
position: absolute;
left: 50%;
top: 50%;
margin-left: -50px;
margin-top: -50px;
width: 100px;
height: 100px;
background-color: black;
} */
/* 方法2
.father {
position: relative;
margin: 0 auto;
width: 200px;
height: 200px;
background-color: pink;
}
.son {
position: absolute;
left: 50%;
top: 50%;
transform: translate(-50%,-50%);
width: 100px;
height: 100px;
background-color: black;
} */
/* 方法3
.father {
position: relative;
margin: 0 auto;
width: 200px;
height: 200px;
background-color: pink;
}
.son {
position: absolute;
top: 0;
bottom: 0;
left: 0;
right: 0;
margin: auto;
width: 100px;
height: 100px;
background-color: black;
} */
/* 方法4 */
.father {
display: flex;
justify-content: center;
align-items: center;
margin: 0 auto;
width: 200px;
height: 200px;
background-color: pink;
}
.son {
width: 100px;
height: 100px;
background-color: black;
}
</style>
</head>
<body>
<!-- 需求:请你写出父子关系盒子居中4种方法 -->
<!-- 提示: 定位+margin
定位+transfrom 定位+方位名词0 flex布局 -->
<div class="father">
<div class="son"></div>
</div>
</body>
</html>
