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  1.简易加载中
 
  @keyframes myfirst
 
  {
 
  from{transform: rotate(0deg)}to{transform: rotate(360deg)}
 
  }
 
  .loading{
 
  animation: myfirst 1.5s infinite linear;//infinite控制执行次数这里一直执行,linear执行速度,匀速
 
  border: 16px solid #f3f3f3;
 
  border-radius: 50%;
 
  border-top:16px solid blue;
 
  width: 120px;
 
  height: 120px;
 
  }
 
  <div class="loading"></div>
 
  2.简易进度条
 
  .move {
 
  width: 0px;
 
  height: 10px;
 
  animation: moveHover 5s infinite linear;
 
  }
 
  <div class="move"></div>
 
  3.过渡属性
 
  .change
 
  {
 
  transition: width 2s;
 
  font-size: 10px;
 
  width: 100px;
 
  height: 20px;
 
  background: yellow;
 
  -moz-transition: width 2s;    /* Firefox 4 */
 
  -webkit-transition: width 2s;    /* Safari 和 Chrome */
 
  -o-transition: width 2s;    /* Opera */
 
  }
 
  .change:hover
 
  {
 
  width: 500px;
 
  }
 
  <div class="change">鼠标滑过</div>
 
  .bigger{
 
  font-size: 20px;
 
  width: 0;
 
  height: 0;//scale根据宽高变大,必须设置width和height
 
  background: #2A9F00;
 
  transition: transform 5s;
 
  }
 
  .bigger:hover{
 
  transform: scale(10);
 
  }
 
  <div class="bigger">大</div>

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