滚动条样式

//滚动条的宽度
  ::-webkit-scrollbar {
    width: 5px !important;
    height: 278px !important;
    background: #f7f8fb !important;
    border-radius: 2px !important;
  }
  //滚动条的滑块
  ::-webkit-scrollbar-thumb {
    width: 5px !important;
    background: #edeff5 !important;
    border-radius: 3px !important;
  }