body {
  font-family: 'Segoe UI', sans-serif;
  margin: 0;
  padding: 0;
  background-color: #fdfdfd;
  color: #333;
}

header {
  background: linear-gradient(to right, #4c669f, #3b5998);
  color: white;
  text-align: center;
  padding: 3rem 1rem;
}

header .cta {
  display: inline-block;
  margin-top: 1rem;
  padding: 0.75rem 1.5rem;
  background-color: #ffd700;
  color: #333;
  text-decoration: none;
  font-weight: bold;
  border-radius: 8px;
}

.programme {
  padding: 2rem 1rem;
  text-align: center;
}

.cours {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.5rem;
  margin-top: 1rem;
}

.carte {
  background-color: #f5f5f5;
  padding: 1rem;
  width: 280px;
  border-radius: 10px;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.inscription {
  background-color: #3b5998;
  color: white;
  padding: 2rem 1rem;
  text-align: center;
}

.inscription button {
  margin-top: 1rem;
  padding: 0.8rem 1.5rem;
  border: none;
  border-radius: 8px;
  background-color: #ffd700;
  color: #333;
  font-weight: bold;
  cursor: pointer;
}

footer {
  text-align: center;
  padding: 1rem;
  background-color: #222;
  color: white;
}