#pdf-chatbot-container{max-width:500px;margin:20px auto;border:1px solid #ccc;padding:15px;border-radius:10px;background:#f9f9f9}#chat-messages{height:200px;overflow-y:auto;margin-bottom:10px}#chat-input{width:75%;padding:5px}#chat-submit{padding:5px 10px}