body {
      margin: 0;
      font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
      background-color: #f4f4f8;
      color: #333;
    }
    header {
      background: linear-gradient(90deg, #4e54c8, #8f94fb);
      color: white;
      padding: 2rem 1rem;
      text-align: center;
      box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    }
    header h1 {
      margin: 0;
      font-size: 2rem;
    }
    .gallery {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
      gap: 1rem;
      padding: 2rem;
    }
    .gallery img {
      width: 100%;
      height: auto;
      border-radius: 10px;
      box-shadow: 0 2px 10px rgba(0,0,0,0.1);
      transition: transform 0.3s ease;
      border: 8px solid #fff;
      outline: 1px solid #ccc;
    }
    .gallery img:hover {
      transform: scale(1.05);
    }
    footer {
      text-align: center;
      padding: 1rem;
      background-color: #ececff;
      font-size: 0.9rem;
      color: #555;
    }