可以滚动但不显示滚动条

html{background-color: #3f3f3f!important;color: white!important;
    -ms-overflow-style: none;  /* Internet Explorer 10+ */
    scrollbar-width: none;  /* Firefox */
    overflow-y: -moz-scrollbars-none; /*older versions of Firefox*/
}
html::-webkit-scrollbar { 
    display: none;  /* Safari and Chrome */
}