.prev-next-nav {
    display: flex;
    justify-content: space-between;
    margin: 1em 0;
    padding: 1em 0;
    border-bottom: 1px solid #eee;
}

.prev-next-nav a {
    text-decoration: none;
    color: #0366d6;
    padding: 0.5em 1em;
    border-radius: 3px;
    transition: background-color 0.2s;
}

.prev-next-nav a:hover {
    background-color: #f6f8fa;
    text-decoration: none;
}

.left-nav::before {
    content: "←";
    margin-right: 0.5em;
}

.right-nav::after {
    content: "→";
    margin-left: 0.5em;
}