��横竖滚动条的尺寸*/
        height: 8px;
      }
  
      ::-webkit-scrollbar-thumb {/*滚动条里面小方块*/
        border-radius: 4px;
        background: #c1c1c1;
      }

      ::-webkit-scrollbar-button {
        display: none;
      }
  
      ::-webkit-scrollbar-track {/*滚动条里面轨道*/
        /* -webkit-box-shadow: inset 0 0 5px rgba(0,0,0,0.2); */
        border-radius: 4px;
        background: #f1f1f1;
      }
    </style>
  </head>
  <body>
    <div id="app"></div>
  <scrip