body {
      margin: 0;
      padding: 0;
      background: #f2f2f2;
      font-family: sans-serif;
    }

    .collage {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      grid-gap: 10px;
      max-width: 900px;
      margin: 40px auto;
    }

    .collage img {
      width: 300;
      height: 200;
      object-fit: cover;
      border-radius: 8px;
      box-shadow: 0 2px 8px rgba(0,0,0,0.1);
      transition: transform 0.3s;
    }

    .collage img:hover {
      transform: scale(1.05);
    }