滚动条样式修改

::-webkit-scrollbar{width: 6px;background-color: #F5F5F5;}
::-webkit-scrollbar-thumb{background-color: #999;}
::-webkit-scrollbar-track{background-color: #F5F5F5;}

.rightModal3{overflow-y:scroll;height:166px;}
.rightModal3::-webkit-scrollbar {display:none}