@media (max-width: 768px) {
  .nav-links {
    position: absolute;
    top: 8.5vh;
    left: 0;
    width: 100%;
    background-color: #5497ad;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    padding: 20px 0;
    transform: translateY(-200%);
    transition: transform 0.3s ease-in-out;
  }

  .nav-links.active {
    transform: translateY(0);
  }

  .username {
    display: none;
  }

  .hamburger {
    display: flex;
  }
}