.dropdown:hover .dropdown-menu {
    display: block;
    margin-top: 0; 
}
.navbar-nav>.active
{
    border-bottom: 3px solid #dee2e6!important;
    border-color: #dc3545!important;
}
.nav-item:hover{
    background: #343a400d;
}
.dropdown-menu{
    border-radius: 0;
    border: none;
    box-shadow: 0px 0px 5px 0px #bababa;
}