body {
    margin: 0 auto;
    width: 100%;
    height: 100%;
    min-height: 100vh;
    max-width: 580px;
  }
  
  .header {
    position: fixed;
    z-index: 99;
    top: 0;
    width: 100%;
    max-width: 580px;
  }
  
  .header > img {
    width: 100%;
    display: block;
  }
  
  .footer {
    position: fixed;
    bottom: 0;
    width: 100%;
    z-index: 99;
    max-width: 580px;
  }
  
  .footer > img {
    width: 100%;
    display: block;
  }
  
  .content img {
    width: 100%;
  }
  
  .play-item {
    position: relative;
  }
  
  .play-item img {
    width: 100%;
  }
  
  .play-item .play-btn {
    display: inline-block;
    width: 50px;
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    margin: auto;
  }
  
  .zw {
    height: 1.2rem;
  }
  
  .tips {
    display: none;
    width: 100%;
    text-align: center;
    color: #039;
    font-size: 18px;
    padding: 20px 0px;
  }
  
  .jc {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    z-index: 99;
    color: white;
    background-color: rgb(39, 39, 39);
  }
  
  .jc {
    text-align: center;
    padding: 75px 0;
  }
  
  .jc img {
    width: 95%;
  }
  
  .close {
    position: absolute;
    top: 0px;
    right: 20px;
    font-size: 50px;
    transform: rotate(45deg);
  }