Use css to achieve loading animation effects

css implementation loadinganimationThe effect is as follows:

html

<div class="ui-loading-wrap">
     <p>加载中</p>
      <i class="ui-loading"></i>
</div>

css

.ui-loading-wrap {
    display: -webkit-box;
    -webkit-box-pack: center;
    -webkit-box-align: center;
    text-align: center;
    height: 40px;
.ui-loading {
    width: 20px;
    height: 20px;
    display: block;
    background: url(../img/loading_sprite.png);
    -webkit-background-size: auto 20px;
    -webkit-animation: am-rotate 1s steps(12) infinite; 
      
@-webkit-keyframes am-rotate {
    from {
        background-position: 0 0
    }
 
    to {
        background-position: -240px 0
    }
}

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