328 dev misc frontend fixes

[janekamata]

ℹ️ Issue

Closes #328

📝 Description

Cleaning up frontend to match design

Briefly list the changes made to the code:

1. Updated button component with additional features
2. Changed all buttons to use button component to ensure consistent styling
3. Changed default input format
4. Added favicon
5. Converted css to tailwind and removed unused css files
6. Various spacing fixes to ensure responsiveness
7. Added some default css color vars and increased default border size

✔️ Verification

Checking on local build

🏕️ (Optional) Future Work / Notes

Need to decide scroll behavior for grant view