* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial, sens-serif;
}

.menu-container {
    margin: 50px auto;
    width: fit-content;
}

.main-nav {
    list-style: none;
    display: flex;
    background-color: blue;
}

.main-nav > li {
    position: relative;
    border-right: 1px solid white;
}

.main-nav > li:last-child {
    border-right: none;
}

.main-nav a {
    display: block;
    padding: 15px 30px;
    color: white;
    text-decoration: none;
    font-weight: bold;
}

.main-nav li:hover > a {
    background-color: oldlace;
    color: blue;
}

.sub-nav {
    list-style: none;
    position: absolute;
    top: 100%;
    left: 0;
    background-color: blue;
    min-width: 220px;
    display: none;
    z-index: 999;
}

.sub-nav li {
    border-top: 1px solid white;
}

.sub-nav a {
    padding: 12px 20px;
    text-align: left;
}

.dropdown:hover .sub-nav {
    display: block;
}