.menu {
    list-style: none;
    padding: 0;
    margin: 50px;
}

.menu-item {
    display: inline-block;
    position: relative;
    margin-right: 2px;
}

.menu-item a {
    display: block;
    padding: 12px 20px;
    background: blue;
    color: white;
    text-decoration: none;
}

.menu-item a:hover {
    background: oldlace;
    color: black;
}

.submenu {
    list-style: none;
    padding: 0;
    margin: 0;
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
}

.submenu li {
    margin-top: 2px;
}

.submenu a {
    width: 160px;
}

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