box-sizing
2017-02-20
css3 box-sizing属性
box-sizing属性可以为三个值之一:content-box(default),border-box,padding-box。
content-box,border和padding不计算入width之内
padding-box,padding计算入width内
border-box,border和padding计算入width之内,其实就是怪异模式了~
ie8+浏览器支持content-box和border-box;
ff则支持全部三个值。
使用时
-webkit-box-sizing: 100px; // for ios-safari, android
-moz-box-sizing:100px; //for ff
box-sizing:100px; //for other
例子
<!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>Document</title>
<style media="screen">
.content-box{
box-sizing:content-box;
-moz-box-sizing:content-box;
width: 100px;
height: 100px;
padding: 20px;
border: 5px solid #E6A43F;
background: blue;
}
.border-box{
box-sizing:border-box;
-moz-box-sizing:border-box;
width: 100px;
height: 100px;
padding: 20px;
border: 5px solid #3DA3EF;
background: yellow;
}
</style>
</head>
<body>
<div class="box">
<div class="content-box"></div>
<div class="border-box"></div>
</div>
</body>
</html>