webApp-exercise/test.html at fixbug · YanZiSen/webApp-exercise · GitHub

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<!DOCTYPE html>
<html>
<head lang="en">
  <meta charset="UTF-8">
  <title></title>
  <style>
    .outer{
      background-color:blue;
      height:300px;  width:300px;
      line-height:300px;
    }
    .inner{
      background-color:green;
      display:inline-block;
      vertical-align:middle;
      height:150px;width:150px;
    }
    .parent{
      box-sizing:border-box;
      width:300px;
      height:50px;
      background-color:green;
    }
    .children{
      box-sizing:border-box;
      width:100%;margin-left:30px;margin-right:20px;
      height:30px;background-color:blue;
    }
    .parent1{
      /*box-sizing:border-box;*/
      border:1px solid green;
      padding:20px;
      width:300px;height:300px;
    }
    .children1{
      /*box-sizing:border-box;*/
      padding:20px;
      width:100%;
      width:auto;
      background-color:blue;
      height:100px;
    }
    .parent2{
      box-sizing:border-box;
      border:10px dotted green;
      /*padding:20px;*/
      width:300px;height:300px;
    }
    .children2{
      box-sizing:border-box;
      width:100%;
      background-color:blue;
      height:100px;
    }
    .container{

      background-color:#cac;
      margin-top:-30px;
      height:40px;
    }
    .container p{
      /*box-sizing:border-box;*/
      margin:0;padding:0;
      height:40px;width:50px;
      float:left;
      background-color:yellow;
      border:1px solid #ddd;
    }
    .container p:nth-child(3){
      background-color:blue;
      margin-top:-15px;
    }
  </style>
</head>
<body>
  <div class='outer'>
    <div class="inner"></div>
  </div>
  <hr/>
  <h3>width100%加上margin的情况</h3>
  <div class="parent">
    <div class="children"></div>
  </div>
  <hr/>
<div class="parent1">
  <div class="children1"></div>
</div>
  <div class="parent2">
    <div class="children2"></div>
  </div>
  <hr/>
<h3>使用margin负值后是否还占据原来的空间</h3>
  <li><img src="src/imgs/banner_1.png" alt=""/></li>
  <div class="container">
    <p class='first'></p>
    <p class='second'></p>
    <p class='third'></p>
  </div>
<div class='test' style='background-color:#afa;height:40px;'></div>
</body>
</html>