/* Left sidebar */
.menu {
  position: fixed;
  top: 0;
  left: 0;

  height: 100vh;
  margin-left: 6px;

  display: flex;
  flex-direction: column-reverse;
  align-items: center;
  justify-content: center;
  gap: 2rem;

  box-sizing: border-box;
}

/* Rotated vertical text links */
.menu a {
  writing-mode: vertical-rl;
  transform: rotate(180deg);

  text-decoration: none;

  font-size: 1.8rem;
  letter-spacing: 1px;

  padding: 0.75rem 0.5rem;
}

@media (max-width: 768px) {
  .menu a {
    font-size: 3rem;
  }
}