.nav-links {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
}

.nav-links a {
    text-decoration: none;
    color: #333;
    font-size: 18px;
    margin: 0 5px;
}

.nav-links a:hover {
    text-decoration: underline;
}