body {
  font-family: Arial, sans-serif;
  margin: 0; padding: 0;
  background-color: #cce7ff; /* bleu clair */
  color: #222;
}

header {
  background: #0077cc;
  color: white;
  padding: 10px 20px;
}

header h1 {
  margin: 0;
  font-size: 2em;
  display: inline-block;
}

nav {
  display: inline-block;
  margin-left: 30px;
}

nav a {
  color: white;
  text-decoration: none;
  margin-right: 15px;
  font-weight: bold;
}

nav a:hover {
  text-decoration: underline;
}

main {
  padding: 20px;
  background: white;
  margin: 15px;
  border-radius: 8px;
  min-height: 400px;
  box-shadow: 0 0 8px rgba(0,0,0,0.1);
}

footer {
  text-align: center;
  padding: 15px;
  background: #0077cc;
  color: white;
  position: fixed;
  bottom: 0;
  width: 100%;
}