body {
  font-family: sans-serif;
  background-color: #f4f4f4;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 0;
}

h1 {
  margin-bottom: 20px;
  color: #333;
  text-align: center;
}

/* Grille qui contient les 4 carrés */
.grid-container {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  max-width: 500px;
  width: 100%;
  padding: 20px;
}

/* Style de base pour chaque carré */
.card {
  background-color: #ffffff;
  border: 2px solid #ccc;
  aspect-ratio: 1 / 1; /* Force le format carré */
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 15px;
  box-sizing: border-box;
}

/* Carré principal d'en-tête (Optionnel: style légèrement différent) */
.card-header {
  background-color: #e0e0e0;
  font-weight: bold;
}

/* Style des liens/boutons de téléchargement */
.download-btn {
  display: inline-block;
  margin-top: 10px;
  padding: 8px 12px;
  background-color: #007bff;
  color: white;
  text-decoration: none;
  border-radius: 4px;
  font-size: 0.9rem;
}

.download-btn:hover {
  background-color: #0056b3;
}