Changed ui of home page and page of every topic #18

[bhaavvya]

solved issue #18 before

https://github.com/user-attachments/assets/fce5988b-b7d3-4901-8bdc-4fc168f70fdf

after

https://github.com/user-attachments/assets/425cdf52-879c-4f44-becd-b1a29ef0bda5

[bhaavvya]

@neerajrathore , I have opened a PR please review it and suggest any changes if needed

[neerajrathore]

@bhaavvya for now I am merging it. these issues can be handled later. great job done👍

[neerajrathore]

@bhaavvya Found a solution for markdown displaying as HTML. look commit

As you created new UI and you would be having best exposure, can you these changes in other files as well?