CSS+HTML的div怎么居中
程序员文章站
2022-05-02 09:49:37
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<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title>子元素在父元素中水平垂直居中</title>
<style>
/*
1.内容水平居中
text-align:center;
2.盒子水平居中
div{
width:200px;
margin:0 auto;
}
3.一行位置垂直居中
line-height=height
3.多个内容垂直居中
父元素加padding（上下padding值一样）
4.子元素在父元素中水平垂直居中
1）弹性盒
.partent{
width: 500px;
height: 500px;
background-color: red;
display: flex;
justify-content: center;
align-items: center;
}
.child{
width: 200px;
height: 200px;
background-color: pink;
}
2)表格法
.partent{
width: 500px;
height: 500px;
background-color: red;
display: table-cell;
vertical-align: middle;
}
.child{
width: 200px;
height: 200px;
background-color: pink;
margin: 0 auto;
}
3.外边距
.partent{
width: 500px;
height: 500px;
background-color: red;
overflow: hidden;
}
.child{
width: 200px;
height: 200px;
background-color: pink;
margin: 0 auto;
margin-top: 150px;
}
4.绝对定位法
.partent{
width: 500px;
height: 500px;
background-color: red;
position: relative;
}
.child{
width: 200px;
height: 200px;
background-color: pink;
position: absolute;
top: 50%;
left: 50%;
margin-left: -100px;
margin-top: -100px;
}
*/
.partent{
width: 500px;
height: 500px;
background-color: red;
position: relative;
}
.child{
width: 200px;
height: 200px;
background-color: pink;
position: absolute;
top: 50%;
left: 50%;
margin-left: -100px;
margin-top: -100px;
}
</style>
</head>
<body>
<div class="partent">
<div class="child"></div>
</div>
</body>
</html>