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0711绝对定位/相对定位/固定定位
小言
Original
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演示案例

  1. <div class="box">
  2. <div class="one">我是第一层</div>
  3. <div class="two">我是第二层</div>
  4. <div class="three">我是第三层</div>
  5. </div>

相对定位

  1. .box .one{
  2. height: 50px;
  3. width: 500px;
  4. background-color: aqua;
  5. position: relative;
  6. top:20px;
  7. left: 50px;
  8. }

绝对定位

  1. .box .two{
  2. height: 50px;
  3. background-color:chartreuse;
  4. position:absolute;
  5. top: 50px;
  6. left: 30px;
  7. }

固定定位

  1. .box .three{
  2. height: 50px;
  3. background-color:burlywood;
  4. position: fixed;
  5. top:100px;
  6. left: 50px;

Correcting teacher:PHPzPHPz

Correction status:qualified

Teacher's comments:
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