body {
      margin: 0;
      overflow: hidden;
      background-color: #0a0a32;
      color: white;
      font-family: "游明朝", "Yu Mincho", serif;
    }

    canvas {
      display: block;
      width: 100%;
      height: 100vh;
    }

    /* タイトルと画像をまとめるコンテナ */
    .content-container {
      position: absolute;
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%);
      display: flex;
      flex-direction: column;
      align-items: center;
      z-index: 10;
      gap: 100px;
      text-align: center;
    }

    /* タイトル画像 */
    .title-image {
      width: 500px;
    }

    /* 画像3枚を横並びにする */
    .image-row {
      display: flex;
      gap: 40px;
    }

    .image-row img {
      width: 200px;
    }

    /* 音楽プレーヤー部分 */
    .audio-container {
      position: absolute;
      top: 20px;
      right: 20px;
      z-index: 20;
      color: white;
      font-size: 20px;
      display: flex;
      flex-direction: column;
      align-items: flex-end;
      gap: 10px;
    }

    .audio-container button {
      margin-left: 5px;
      padding: 5px 10px;
      font-size: 14px;
      cursor: pointer;
    }

    /* トップに戻るボタン */
    .top-button {
      display: inline-block;
      background-color: rgba(250, 98, 207, 0.913);
      border: 1px solid white;
      color: #0a0a32;
      padding: 8px 16px;
      border-radius: 8px;
      font-size: 16px;
      font-weight: bold;
      cursor: pointer;
      transition: 0.3s;
      text-decoration: none;
    }

    .top-button:hover {
      background-color: white;
      color: #0a0a32;
      box-shadow: 0 0 10px rgba(255, 255, 255, 0.6);
    }