nav {
    background-color: var(--gh-frame-bg);
    padding-right: 1rem;
}

nav ul {
    list-style-type: none;
    display: grid;
    grid-template-columns: 1fr;
    padding-left: 0;
    position: sticky;
    top: 0;
}

nav li {
    display: flex;
    justify-content: center;
    border: 1px solid var(--gh-frame-bg);
    border-top-right-radius: 10px;
    border-bottom-right-radius: 10px;
    border-bottom-width: 3px;
    border-left: none;
    background-color: #f4f5f5;
    margin-bottom: -1px;
    transition: margin 230ms ease;
}

nav li:first-child {
    border-top: 0;
}

nav li:not([aria-current]):hover {
    margin-right: -0.5rem;
}

nav li[aria-current] {
    border-right: none;
    background-color: #fff;
    margin-right: -1rem;
    margin-left: -1rem;
    border-radius: 0;
}

nav li a {
    text-decoration: none;
    font-family: sans-serif;
    color: #333;
    font-variant: small-caps;
    padding: .25rem .66rem;
    text-align: center;
    width: 100%;
}

nav li[aria-current] a {
    color: rgba(var(--bs-primary-rgb), 1);
    text-shadow: 0 0 2px #ddd;
}