Exercice 4 : CSS Grid

4.1 Grille de cartes responsive

.grid-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
}

4.2 Layout complet avec Grid Areas

.page-layout {
  display: grid;
  grid-template-columns: 200px 1fr 200px;
  grid-template-rows: auto 1fr auto;
  grid-template-areas:
    "header header header"
    "sidebar main aside"
    "footer footer footer";
  gap: 20px;
  min-height: 100vh;
}