Add Hover Effect for Buttons to Improve UX

[mo-gbolahan]

Issue

Fixes #231 by @mo-gbolahan

Description

This PR addresses the issue where buttons lacked hover feedback, which led to a poor user experience. A new btn-hover class has been created and applied to the button elements to provide a smooth hover effect, improving interactivity and responsiveness.

Technical details

1. Created a btn-hover class in the CSS, which adds a hover effect to buttons (e.g., color change, shadow, or subtle animation).
2. Applied the btn-hover class to the appropriate button elements across the interface.

Tests

1. Navigate to any page with buttons.
2. Hover over the buttons and observe the hover effect (e.g., color change, shadow, etc.).
3. Ensure the transition is smooth and consistent across different pages/components.

Checklist

• My pull request has a descriptive title (not a vague title like Update index.md).
• My pull request targets the default branch of the repository (main or master).
• My commit messages follow best practices.
• My code follows the established code style of the repository.
• I added or updated tests for the changes I made (if applicable).
• I added or updated documentation (if applicable).
• I tried running the project locally and verified that there are no
  visible errors.

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Developer Certificate of Origin

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[possumbilities]

Hi, and thank you for doing this work. After further review the Issue in question here as moved to 🚧 status: blocked Blocked & therefore, not ready for work so I'm closing this PR for now.

Additionally, adding hover effects should be done via :hover rather than a custom class added individually to elements.