.nav {
  position: fixed;
  left: 50%;
  transform: translateX(-50%);
  top: 0;
  display: flex;
  gap: 20px;
  padding: 20px 0;
  z-index: 50;
  justify-content: center;
  width: fit-content;
}

@media (max-width: 900px) {
  .nav {
    position: fixed;
    left: auto;
    right: 0;
    transform: none;
    top: 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
    font-size: 13px;
    padding: 20px 20px;
    z-index: 50;
    align-items: end;
    width: fit-content;
  }
}