  #pdf-container {
    border: 1px solid #ccc;
    width: 100%;
    max-width: 900px;
    margin: 10px auto;
    text-align: center;
  }

  #pdf-render {
    border: 1px solid black;
    width: 100%;
  }

  #controls {
    margin: 10px;
  }

  button {
    margin: 0 5px;
  }

  #progress-container {
    width: 80%;
    max-width: 600px;
    margin: 15px auto;
    background: #eee;
    border: 1px solid #aaa;
    border-radius: 50%;
    overflow: hidden;
    height: 20px;
  }

  #progress-bar {
    height: 100%;
    background: #4caf50;
    width: 0%;
    text-align: center;
    color: white;
    font-size: 12px;
    line-height: 20px;
  }

  /* Loader styles */
  .loader-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 50px;
  }

  .loader {
    border: 8px solid #f3f3f3;
    border-top: 8px solid #3498db;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 2s linear infinite;
    margin-bottom: 10px;
  }

  @keyframes spin {
    0% {
      transform: rotate(0deg);
    }

    100% {
      transform: rotate(360deg);
    }
  }

  .loading-text {
    font-family: Arial, sans-serif;
    color: #555;
  }