CSS3制作管理系统加载Loadding

 

 

<div id="loader-wrapper">
      <div class="loader-box">
        <span>A</span>
        <span>d</span>
        <span>e</span>
        <span>n</span>
        <span>g</span>
        <span>.</span>
        <span>y</span>
      </div>
      <div class="load_title">加载中…</div>
  </div>

　　

#loader-wrapper {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        z-index: 99999;
        background-color: #f5f7fa;
      }

      #loader-wrapper .loader-box {
        position: fixed;
        left: calc(50% - 250px);
        top: calc(50% - 100px);
        margin: 0 auto;
        width: 500px;
        height: 200px;
        text-align: center;
        vertical-align: center;
        font-weight: bold;
        color: #87888e;
        font-size: 35px;
      }

      #loader-wrapper .loader-box > span {
        opacity: 0.4;
        display: inline-block;
        animation: bouncingLoader 1s infinite alternate;
      }

      #loader-wrapper .loader-box > span:nth-child(2) {
        animation-delay: 0.1s;
      }

      #loader-wrapper .loader-box > span:nth-child(3) {
        animation-delay: 0.2s;
      }

      #loader-wrapper .loader-box > span:nth-child(4) {
        animation-delay: 0.3s;
      }

      #loader-wrapper .loader-box > span:nth-child(5) {
        animation-delay: 0.4s;
      }

      #loader-wrapper .loader-box > span:nth-child(6) {
        animation-delay: 0.5s;
      }

      #loader-wrapper .loader-box > span:nth-child(7) {
        animation-delay: 0.6s;
      }

      @keyframes bouncingLoader {
        0% {
          transform: translateY(0);
        }

        50% {
          transform: translateY(25px);
        }

        100% {
          transform: translateY(0);
        }
      }

      #loader-wrapper .load_title {
        font-weight: bold;
        z-index: 1002;
        position: absolute;
        top: 50%;
        margin-top: 15px;
        color: #87888e;
        font-size: 18px;
        width: 100%;
        height: 30px;
        text-align: center;
        opacity: 0.4;
        line-height: 30px;
      }