body{margin: 0px;overflow: hidden;}
  /*全屏显示大图*/
  #opacityBottom{
    width: 100%;
    height: 100%;
    position: fixed;
    background:rgba(0,0,0,0.8);
    z-index:1000;
    top: 0;
    left: 0;
    z-index: 39802131;
  }
  .none-scroll{
    overflow: hidden;
    height: 80%;
  }
  .img_wrap{
    width: 100%;
    height: 100vh;
  }
  .img_wrap p{
    width:100%;
    height:100vh;
    line-height: calc(100vh - 0px);  /* 行高等于高度 */
    text-align: center;
    display: list-item;
}
  .bigImg{
    max-width:90%;
    max-height: 90%;
    cursor: zoom-out;
    vertical-align:middle;
   
  }