.top-menu-item .submenu{
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background: #bdc5cc;
    list-style: none;
    padding-bottom: 5px;
}
.top-nav ul.top-menu li.top-menu-item .submenu a{
    padding: 0.5rem 0.2rem;
}
.top-menu-item{
    position: relative;
}
.top-menu-item:hover .submenu{
    display: block;
}