angularjs/python flask code to embed a scrollable area to display dynamic html content on website

things i already have: python flask code that responds to dialogflow(chatbot)webhooks. a basic html page with the chatbot embedded in it as a iframe. i want to be able to have more dynamic responses to the inquiries sent to the flask app by the chatbot. so i thought this could be done via scrollable area embedded in it. I need scrollable area that can show tables, images, other html pages within it. the scope of the project would be to make the scrollable area appear, have it work on one or two intents of the chatbot. i.e the chatbot recievves a question, sends post request to flask app, then recieves a dynamic content like image or mini html page or html tables, lists appear on the scrollable area. the scrollable would automatically delete the oldest content once it reaches a certain number of content on the area.