fix: remove border

[savannah-martin]

Remove Border from Donate Button

Description

I removed the border from the donate button in the footer.

Reason

Dr. Casey told me to.

How this has been tested

I checked the changes in my local development environment.

Types of changes

• [ ] New feature (adds functionality)
• [x] Bug fix (fixes an issue)
• [ ] Breaking changes (causes defects to existing pieces)

Screenshots

Before: After:

Checklist:

• [x] I have read and complied with the CONTRIBUTING document
• [x] The changes I've made follow the existing code style and formatting requirements
• [ ] My changes require updates to the documentation, which I have modified accordingly