滚动条

::-webkit-scrollbar {
    width:7px;
    height:7px;
}
::-webkit-scrollbar-track {
    /*-webkit-box-shadow: inset 0 0 5px rgba(0,0,0,.2); */
    /*-webkit-border-radius: 8px;
    border-radius: 8px;*/
}
::-webkit-scrollbar-thumb {
    /*-webkit-border-radius: 8px;
    border-radius: 8px;*/
    background: rgba(0,0,0,0.2);
    /*-webkit-box-shadow: inset 0 0 5px rgba(0,0,0,0); */
}
::-webkit-scrollbar-thumb:window-inactive {
    background: rgba(0,0,0,0.3);
}