nav {
    padding-top: 1em;
}

nav ul {
    padding: 0;
    display: flex;
}

nav > ul > li > ul {
    display: block;
    font-size: 0.9rem;
}

nav li {
    list-style: none;
    padding-left: 0.4em;
}

nav li a.active {
    text-decoration-thickness: 0.3rem;
}