.close-btn {
      position: absolute;
      top: 18px;
      right: 24px;
      font-size: 20px;
      font-weight: bold;
      color: #333;
      background: #fff;
      border: none;
      border-radius: 50%;
      padding: 4px 12px;
      cursor: pointer;
      z-index: 10;
      box-shadow: 0 2px 8px rgba(52, 152, 219, 0.08);
    }

    .close-btn:hover {
      background-color: black;
      color: white;
    }