body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  background: #f3f3f3;
  color: #222;
}

/* Navigation */
nav ul {
  list-style-type: none;
  background: #28527a;
  overflow: hidden;
  margin: 0;
  padding: 0;
  display: flex;
  justify-content: center;
}

nav li {
  display: inline;
}

nav a {
  text-decoration: none;
  color: white;
  padding: 1em;
  display: block;
}

nav a:hover {
  background: #8ac4d0;
  color: #28527a;
}

/* Conteneurs principaux */
header,
section {
  padding: 2em;
  max-width: 1000px;
  margin: auto;
  background: white;
  margin-top: 2em;
  margin-bottom: 2em;
  border-radius: 8px;
}

footer {
  text-align: center;
  padding: 1em;
  background: #28527a;
  color: white;
  position: fixed;
  left: 0;
  bottom: 0;
  width: 100%;
}

/* Responsive Activities */
.activities {
  display: flex;
  justify-content: space-between;
  gap: 2em;
}

.paragraphes {
  text-indent: 2em;
}

/* Ajout du responsive */
@media (max-width: 700px) {
  nav ul {
    flex-direction: column;
    align-items: stretch;
  }

  .activities {
    flex-direction: column;
    gap: 1em;
  }

  header,
  section {
    padding: 1em;
  }
}