: 44px;
        font-family: sans-serif;
        background: #fafafa;
      }

      header {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 44px;
        line-height: 44px;
        font-size: 17px;
        font-weight: bold;
        color: #000;
        text-align: center;
        background: #f7f7f8;
        z-index: 9999;
        border-bottom: 1px solid #c4c4c4;
        box-sizing: border-box;
      }

      main {
        height: 1000px;
        backgroun