body {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
      }
      .container {
        display: flex;
        flex-wrap: wrap;
        max-width: 1200px;
        margin: 0 auto;
      }
      model-viewer {
        width: 100%;
        height: 100%;
        background-color: #f0f0f0;
      }