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" alt="" />

一行有5列，第2、4列宽度150px，其他3列平均分配剩下的宽度：

思路：设置1、3、5宽度为33.33%-100px，3列的宽度就是99.99%-300px，再加上2、4列的宽度和300px，5列的宽度和≈100%，用这个思路可以应付各种复杂的自适应布局。

方法：但是宽度没有33.33%-100px这种写法，所以要用marging减少宽度，还要padding来减少自己内容宽度，避免内容与旁边的重叠

注意：box-sizing: border-box;这个属性是保证宽度不受padding影响

<!doctype html>

<html>

<head>

<meta charset="utf-8">

<title>col</title>

</head>

<style>

html,body{padding:0; margin:0}

div{ float:left; word-break:break-all}

.c2{width:150px;background:#FCF;}

.c4{width:150px;background:#0CF;}

.c1,.c3,.c5{

width:33.33%;

-webkit-box-sizing: border-box;

box-sizing: border-box;

}

.c3,.c5{

    margin-left:-100px;

    padding-left:100px;

}

.c1{

    margin-right:-100px;

    padding-right:100px;

}

</style>

<body>

<div class="c1">111111111111111111111111111111111111111111111111</div>

<div class="c2">2222222222222222222222222222</div>

<div class="c3">333333333333333333333333333333333333333333333333</div>

<div class="c4">4444444444444444444444444444</div>

<div class="c5">555555555555555555555555555555555555555555555555</div>

</body>

</html>