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Seven Ways to Center a Box Horizontally and Vertically

2022-08-05 06:22:00 【MoXinXueWEB】

方法一：定位+ 平移

<!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> .parent {
       width: 500px; height: 500px; border: 1px solid #000; position: relative; } .child {
       width: 100px; height: 100px; border: 1px solid #999; position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); } </style>
</head>
<body>
    <div class="parent">
    	<div class="child">我是子元素</div>
    </div>
</body>
</html>

方法二：弹性布局

<!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> .parent {
       width: 500px; height: 500px; border: 1px solid #000; display: flex; justify-content: center; align-items: center; } .child {
       width: 100px; height: 100px; border: 1px solid #999; } </style>
</head>
<body>
    <div class="parent">
    	<div class="child">我是子元素</div>
    </div>
</body>
</html>

方法三：网格 Grid

<!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> .parent {
       width: 500px; height: 500px; border: 1px solid #000; display: grid; place-items: center; } .child {
       width: 100px; height: 100px; border: 1px solid #999; } </style>
</head>
<body>
    <div class="parent">
    	<div class="child">我是子元素</div>
    </div>
</body>
</html>

方法四：margin：auto;

<!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> .parent {
       width: 500px; height: 500px; border: 1px solid #000; position: relative; } .child {
       width: 100px; height: 100px; border: 1px solid #999; position: absolute; margin: auto; top: 0; left: 0; right: 0; bottom: 0; } </style>
</head>
<body>
    <div class="parent">
    	<div class="child">我是子元素</div>
    </div>
</body>
</html>

方法五：表格布局

<!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> .parent {
       width: 500px; height: 500px; border: 1px solid #000; display: table-cell; vertical-align: middle; text-align: center; } .child {
       width: 100px; height: 100px; border: 1px solid #999; display: inline-block; } </style>
</head>
<body>
    <div class="parent">
    	<div class="child">我是子元素</div>
    </div>
</body>
</html>

方法六：计算父盒子与子盒子的空间距离

<!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> .parent {
       width: 500px; height: 500px; border: 1px solid #000; } .child {
       width: 100px; height: 100px; border: 1px solid #999; margin-top: 200px; margin-left: 200px; } </style>
</head>
<body>
    <div class="parent">
    	<div class="child">我是子元素</div>
    </div>
</body>
</html>

方法七：定位+负边距

<!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> .parent {
       width: 500px; height: 500px; border: 1px solid #000; position: relative; } .child {
       width: 100px; height: 100px; border: 1px solid #999; position: absolute; top: 50%; left: 50%; margin-top: -50px; margin-left: -50px; } </style>
</head>
<body>
    <div class="parent">
    	<div class="child">我是子元素</div>
    </div>
</body>
</html>

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本文为[MoXinXueWEB]所创，转载请带上原文链接，感谢
https://yzsam.com/2022/217/202208050523568102.html

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