* {
    box-sizing: border-box;
  }
  
  body {
    margin: 0;
    font-family: 'Segoe UI', sans-serif;
    background-color: #fff;
    color: #333;
  }
  
  header {
    background-color: #d62828;
    color: white;
    padding: 20px;
    text-align: center;
  }
  
  .header-content {
    display: flex;
    align-items: center;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
  }
  
  .logo {
    height: 60px;
    width: auto;
  }
  
  header h1 {
    margin: 0;
    font-size: 28px;
  }
  
  nav {
    margin-top: 15px;
  }
  
  nav a {
    color: white;
    text-decoration: none;
    margin: 0 10px;
    font-weight: bold;
  }
  
  nav a:hover {
    text-decoration: underline;
  }
  
  main {
    max-width: 1100px;
    margin: 0 auto;
    padding: 20px;
  }
  
  .hero {
    display: flex;
    flex-wrap: wrap;
    background-color: #fff;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    gap: 20px;
  }
  
  .hero-text {
    flex: 1 1 300px;
  }
  
  .hero-image {
    flex: 1 1 300px;
  }
  
  .video-wrapper {
    position: relative;
    width: 100%;
    padding-top: 56.25%;
    border-radius: 10px;
    overflow: hidden;
  }
  
  .video-wrapper video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
  }
  
  .test-button {
    text-align: center;
    margin: 30px 0;
  margin-bottom: 20px;
  }
  
  .test-button a {
    background-color: #007bff;
    color: white;
    padding: 12px 24px;
    border-radius: 8px;
    text-decoration: none;
    font-size: 16px;
  }
  
  .test-button a:hover {
    background-color: #d62828;
  }
  
  .temoignage, .curriculum {
    background-color: #fff;
    padding: 30px;
    margin-top: 40px;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  }
  
  .temoignage p {
    line-height: 1.6;
    margin-bottom: 20px;
  }
  
  .curriculum .level {
    margin-bottom: 20px;
  }
  
  section h2 {
    text-align: center;
    color: #d62828;
  }
  
  section img {
    display: block;
    max-width: 100%;
    height: auto;
    margin: 20px auto;
    border-radius: 10px;
  }
  
  .site-footer {
    background-color: #d62828;
    color: white;
    text-align: center;
    padding: 20px;
    font-size: 14px;
  }
  
  .site-footer a {
    color: white;
    text-decoration: underline;
  }
  
  @media (max-width: 768px) {
    header h1 {
      font-size: 22px;
    }
  
    nav a {
      display: block;
      margin: 8px 0;
    }
  
    .test-button a {
      font-size: 14px;
      padding: 10px 16px;
    }
  
    .header-content {
      flex-direction: column;
      align-items: center;
    }
  }