.menu-items{
    margin: unset!important;
    list-style:none;
}

.menu-items .dropdown {
    margin-top: 6px!important;
}

.menu-item{
    position:relative;
    margin: unset!important;
    margin-top: 2px!important;
}

.menu-items:hover {
    background-color: hsl(204, 44%, 42%)!important;
    color: white!important;
}

.menu-items:hover .nav-link {
    background-color: #3b7499!important;
    text-shadow:
        0 0 2px rgba(255,255,255,.6),
        0 0 6px rgba(255,255,255,.3);
}

.menu-items .nav-link {
    padding: 10px;
}

.dropdown-menu,
.submenu{
    position:absolute;
    background:#fff;
    box-shadow:0 6px 18px rgba(0,0,0,.15);
    min-width:240px;
    z-index:1000;
}

.dropdown-menu{
    top:100%;
    left:0;
    display:none;
}

.menu-item:hover .dropdown-menu{
    display:block;
}

.submenu{
    top:0;
    left:100%;
    max-height:400px;
    overflow-y:auto;
    border-radius: 5px;
}

.dropdown-menu a,
.submenu a{
    color:inherit;
    text-decoration:none;
}

.dropdown-item,
.submenu-dropdown-item{
    display:flex;
    align-items:center;
    justify-content:space-between;
    padding:12px;
    cursor:pointer;
    white-space:nowrap;
    transition:.2s;
}

.submenu-dropdown-item{
    display:block;
}

.dropdown-item:hover,
.submenu-dropdown-item:hover{
    background-color: #3b7499!important;
    color: #fff!important;
}

@media (max-width: 660px) {
    .menu-items {
        display: none;
    }
}