CSS Div填充剩余高度

Question

请看我的jsfiddle

我希望绿色中间div填充包装的剩余空间,div无论它有多少内容.

如果它重要我也包括bootstrap.

Answer 1

给容器:

display:flex;
flex-direction:column;

并为元素:

flex:1;

演示:https: //jsfiddle.net/ugjfwbg4/1/

body {
  background-color: red;
  height: 100%;
}

.wrap {
  height: 100vh;
  width: 100%;
  padding: 20px;
  background-color: yellow;
  display:flex;
  flex-direction:column;
}

.top {
  width: 100%;
  height: 50px;
  background-color: blue;
}

.mid {
  width: 100%;
  background-color: green;
  flex:1;
  display:flex;
  flex-direction:column;
}

.left{
  flex:1;
  width: 50%;
  background-color: red;
}

.bottom {
  width: 100%;
  height: 50px;
  background-color: blue;
}

<div class="wrap">
  <div class="top"></div>

  <div class="mid">
    
    <div class="left">left</div>
  </div>

  <div class="bottom"></div>
</div>