1.使用CSS3 的伸缩盒布局
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<style>
#container {
height: 400px;
width: 100%;
background-color: gray;
display:-webkit-flex;
display: flex;
flex-direction: row;
-webkit-flex-direction: row;
-webkit-justify-content: center;
justify-content: center;
-webkit-align-items: center;
align-items: center;
}
#container > div{
height: 200px;
width: 200px;
background-color: red;
}
</style>
</head>
<body>
<div id="container">
<div></div>
</div>
</body>
</html>
2.position:absolute 和 margin 联合使用
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<style>
#container {
height: 400px;
width: 100%;
background-color: gray;
position: relative;
}
#container > div{
height: 200px;
width: 200px;
background-color: red;
position: absolute;
top: 50%;
left: 50%;
margin: -100px 0 0 -100px;
}
</style>
</head>
<body>
<div id="container">
<div></div>
</div>
</body>
</html>
3.position:absolute 和 margin: auto联合使用
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<style>
#container {
height: 400px;
width: 100%;
background-color: gray;
position: relative;
}
#container > div{
height: 200px;
width: 200px;
background-color: red;
position: absolute;
top: 0;
bottom: 0;
left: 0;
right: 0;
margin: auto;
}
</style>
</head>
<body>
<div id="container">
<div></div>
</div>
</body>
</html>
时间： 2024-10-10 17:38:06