外边框之间的变化

zxhta

于 2019-10-29 20:47:53 发布

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本文链接：https://blog.youkuaiyun.com/zxhta/article/details/102808259

版权

<!doctype html>
<html lang="en">
<head>
 <meta charset="UTF-8">
 <title>Document</title>
<style> *{
	  margin:0px;
	  padding:0px;
	 }
 div{
	  height: 100px;
	  width: 100px;
	  border:1px solid red;
	 }
.a{
  background-color: pink;
 }
 .b{
	 /*1234上右下左 边*/
	 /*margin:100px 300px 80px 230px;*/
	 /*margin-left: 40px;*/
	 /*margin-left: 30%;*/
	 /*margin:80px auto ;*/
	 background-color: yellow;
	  text-align: center;
	  margin-top: -30px ;
	 }
 .c{
  	margin-top:-20px;
  }
	 </style>
</head>
<body>
 <div class="a">111</div>
 <div class="b">222</div>
 <div class="c">333</div>
</body>
</html>