CSS Cheat Sheet — Flexbox, Grid & Selectors

.flex {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .container { max-width: 1200px; margin: 0 auto; }
}