改变Chrome滚动条样式

::-webkit-scrollbar-track-piece{width:10px;background-color:#4e4e5a ;  }

::-webkit-scrollbar{width:10px;height:6px ; }

::-webkit-scrollbar-thumb{height:50px;background:#3fb560;   cursor:pointer;}

::-webkit-scrollbar-thumb:hover{background:#3fb560 ; cursor:pointer