.pdf-upload-block {
       padding: 20px;
       border: 1px solid #ccc;
       border-radius: 5px;
       margin: 10px 0;
   }
   .pdf-upload-block input[type="file"] {
       margin-bottom: 10px;
   }
   .pdf-content {
       margin-top: 20px;
       border: 1px solid #eee;
       padding: 10px;
       max-height: 500px;
       overflow-y: auto;
   }