::-webkit-scrollbar {width: 6px;height: 6px;}
::-webkit-scrollbar-button {display: none;}
::-webkit-scrollbar-thumb {border-radius: 10px;box-shadow: inset 0 0 5px rgba(0, 0, 0, 0.2);background-color: gray;}
::-webkit-scrollbar-track {box-shadow: inset 0 0 5px rgba(0, 0, 0, 0.2);border-radius: 10px;background-color: #fff;}
::-webkit-scrollbar-track-piece {background-color: lightgray;border-radius: 100px;}

/*定义滚动条高宽及背景 高宽分别对应横竖滚动条的尺寸*/
.popup_bg ::-webkit-scrollbar{	width: 5px; height: 5px;background-color: #F5F5F5;}
/*定义滚动条轨道 内阴影+圆角*/
.popup_bg ::-webkit-scrollbar-track{-webkit-box-shadow: inset 0 0 6px rgba(0,0,0,0.3); border-radius: 5px;background-color: #F5F5F5;}
/*定义滑块 内阴影+圆角*/
.popup_bg ::-webkit-scrollbar-thumb{border-radius: 5px; -webkit-box-shadow: inset 0 0 6px rgba(0,0,0,.3);background-color: #555;}