中间固定 两边自适应
描述:现在有三列 a、b、a;其中它们高度一定、b宽度200px,让a自适应 该如何做?
float +负margin
<section class="layout-float">
<style>
.layout-float {
min-height: 200px;
}
.layout-float .left,
.layout-float .right {
float: left;
width: 50%;
height: 200px;
background-color: blue;
}
.layout-float .left {
margin-left: -35px;
}
.layout-float .right {
float: right;
margin-right: -35px;
}
.layout-float .center {
width: 70px;
height: 200px;
float: left;
background-color: red;
}
</style>
<article>
<div class="left">left</div>
<div class="center">center</div>
<div class="right">right</div>
</article>
</section