line-height决定inline高度

by jizhen tan

HTML

<div class="demo1">测试</div>
<div class="demo2">测试</div>

CSS

.demo1{
  font-size: 20px; 
  line-height: 0; 
  border: 1px solid blue; 
  background: red;
}
.demo2{
  font-size: 0; 
	margin-top:20px;
  line-height: 20px; 
  border: 1px solid red;
  background: yellow;
}