.menu {
    background: #0056a3;
}

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

.menu-level-1 {
    display: flex;
}

    .menu-level-1 > li {
        position: relative;
    }

.menu a {
    display: block;
    padding: 12px 18px;
    color: #fff;
    text-decoration: none;
}

.menu-level-2 {
    display: none;
    position: absolute;
    top: 100%;
    background: #fff;
    min-width: 220px;
}

    .menu-level-2 a {
        color: #333;
    }

.menu li:hover > .menu-level-2 {
    display: block;
}