.dropdown.dropdown-menu{display:none}
.dropdown:hover>.dropdown-menu,
.dropend:hover>.dropdown-menu,
.dropend:hover>.dropdown-menu{display:block; margin-top:.125em;margin-left:.125em}
@media screen and (min-width:769px){
    .dropend:hover>.dropdown-menu{position:absolute; top:0; left:100%}
    .navbar-nav.nav-link{color:#000}
    .drop.drop-toggle{color:#444;
    margin-left:1em}
.dropdown-item:hover{
    background: color #666;color:#333}
}}