CSS3 box-sizing属性

box-sizing属性能够为三个值之一:content-box(default),border-box,padding-box。css

content-box,border和padding不计算入width以内android

padding-box,padding计算入width内ios

border-box,border和padding计算入width以内,其实就是怪异模式了~web

 

ie8+浏览器支持content-box和border-box;浏览器

ff则支持所有三个值。spa

 

使用时:code

-webkit-box-sizing: 100px; // for ios-safari, androidblog

-moz-box-sizing:100px; //for ffit

box-sizing:100px; //for otherio

栗子:

复制代码
<style type="text/css">
    .content-box{
        box-sizing:content-box;
        -moz-box-sizing:content-box;
        width: 100px;
        height: 100px;
        padding: 20px;
        border: 5px solid #E6A43F;
        background: blue;
    }
    .padding-box{
        box-sizing:padding-box;
        -moz-box-sizing:padding-box;
        width: 100px;
        height: 100px;
        padding: 20px;
        border: 5px solid #186645;
        background: red;                
    }
    .border-box{
        box-sizing:border-box;
        -moz-box-sizing:border-box;
        width: 100px;
        height: 100px;
        padding: 20px;
        border: 5px solid #3DA3EF;
        background: yellow;
    }
</style>
复制代码

截图(ff):

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