CSS2/CSS3盒子居中的三种方法
程序员文章站
2024-01-26 08:24:04
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设计文稿：B在A的中间
1.
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>盒子居中</title>
<style>
div{
width:200px;
height:200px;
border:1px solid red;
display:table-cell;
text-align:center;
vertical-align:middle;
}
div span{
display:inline-block;
width:100px;
height:100px;
border:1px solid black;
}
</style>
</head>
<body>
<div>
<span></span>
</div>
</body>
</html><!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>盒子居中</title>
<style>
div{
width:200px;
height:200px;
margin:100px auto;
border:1px solid red;
position: relative;
}
div span{
display:block;
width:100px;
height:100px;
border:1px solid blueviolet;
position:absolute;
top:0;
left: 0;
right: 0;
bottom: 0;
margin:auto;
}
</style>
</head>
<body>
<div>
<span></span>
</div>
</body>
</html><!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>盒子居中g</title>
<style>
div{
width:200px;
height:200px;
border:1px solid black;
display:flex;
flex-direction:row;
justify-content: center;
align-items: center;
margin:100px auto;
}
div span{
display:block;
width:100px;
height: 100px;
border:1px solid pink;
}
</style>
</head>
<body>
<div>
<span></span>
</div>
</body>
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