/*滚动条整体样式*/

/*高宽分别对应横竖滚动条的尺寸*/

.content-box::-webkit-scrollbar{

    width: 4px;

    height: 4px;

}

/*滚动条里面小方块*/

.content-box::-webkit-scrollbar-thumb{

    border-radius: 5px;

    -webkit-box-shadow: inset 0 0 5px rgba(0,0,0,0.2);

    background: rgba(0,0,0,0.2);

}

/*滚动条里面轨道*/

.content-box::-webkit-scrollbar-track{

    -webkit-box-shadow: inset 0 0 5px rgba(0,0,0,0.2);

    border-radius: 0;

    background: rgba(0,0,0,0.1);

}