div 自适应高度 自动填充剩余高度
https://www.cnblogs.com/pangguoming/p/5695184.html
知道A的高度, 给B剩余 方案1:
Html:
![](https://images.cnblogs.com/OutliningIndicators/ContractedBlock.gif)
<div class="outer"> <div class="A"> 头部DIV </div> <div class="B">下部DIV </div> </div> CSS: html,body { height: 100%; padding: 0; margin: 0; } .outer { height: 100%; padding: 100px 0 0; box-sizing: border-box ; position: relative; } .A { height: 100px; background: #BBE8F2; position: absolute; top: 0 ; left: 0 ; width: 100%; } .B { height: 100%; background: #D9C666; }
效果:
方案2:需要box-sizing
HTML:
<div class="outer"> <div class="A">头部DIV</div> <div class="B">下部DIV</div> </div> html, body { height: 100%; padding: 0; margin: 0; } .outer { height: 100%; padding: 100px 0 0; box-sizing: border-box ; } .A { height: 100px; margin: -100px 0 0; background: #BBE8F2; } .B { height: 100%; background: #D9C666; }
效果: