[Feature Request] Adding responsiveness

### Description

Hi, I would like to add responsivesness to the website, so it is also accessible on phones and other devices. I would like to work on this issue myself.
Please let me know if there are any questions, thanks!

### Screenshots

_No response_

### Checklist

- [X] I have checked for duplicate [issues](https://github.com/BeforeIDieCode/BeforeIDieAchievements/issues)
- [X] I have read the [Contribution Guidelines]((https://github.com/BeforeIDieCode/BeforeIDieAchievements/blob/main/CONTRIBUTION-GUIDELINES.md))
- [X] I am willing to work on this issue (optional)