html, body {
    -webkit-user-select: none;
    width: 100%;
    height: 100%;
  }
  
  a, button, input, optgroup, select, textarea, div {
    -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
  }
  
  .main {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 500px;
    overflow: scroll;
  
    .main__top {
      height: 250px;
      width: 100%;
      /* margin-bottom:20px; */
      /* background: #fff url(http://hzmetro3.oss-cn-hangzhou.aliyuncs.com/bg.jpg) no-repeat center center/100% auto ; */
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      .main__top--img {
        height: 140px;
        /* width: 140px; */
        margin: 0 auto 20px;
        img {
          height: 100%;
          width: 100%;
        }
      }
      .main__top--title {
        width: 100%;
        text-align: center;
        h1 {
          font-size: 23px;
          margin: 0 0 7px 0;
        }
        small {
          font-size: 12px;
          color: #666;
        }
      }
  
    }
    .main__middle {
      width: 250px;
      margin: 0 auto;
      padding: 20px 0;
      text-align: center;
      border-top: 1px solid #e6e6e6;
      p {
        font-size: 13px;
        line-height: 140%;
        color: #999;
        margin:0;
      }
  
    }
    .main__bottom {
      width: 250px;
      margin: 0 auto;
      .main__bottom--button {
        text-decoration: none;
        height: 45px;
        width: 100%;
        border-radius: 45px;
        -webkit-appearance: none;
        border: 1px solid #B5B5B5;
        background-color: transparent;
        display: flex;
        justify-content: center;
        align-items: center;
        outline:0;
        margin-bottom:30px;
        &:active {
          background: #eee;
          -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
        }
        &:nth-child(1) {
          margin-bottom: 15px;
        }
        img {
          height: 25px;
          width: 25px;
          margin-right: 8px;
        }
        span {
          line-height: 120%;
          color: #666;
        }
      }
    }
  }