Add styling to home button

[cadechaney]

🛠️ Description of this branch

• Added a hover effect to the home button for user friendliness

• Added a title property to the image on the nest in header so when the user hovers they will be told it goes to mainpage

• [ ] New Feature

• [x] Fix

• [ ] Documentation

• [ ] Tests

🧠 Context or Rationale for this code

Only changes made are in the Header component and the header css.

👀 Checks

• [x] When the project is run locally, the terminal shows no errors or warnings
• [x] Breaks nothing
• [ ] Breaks some things & Creates new issues
• [ ] Code in this branch has been tested
• [ ] Forgot to write new tests for changes in this code, but it is added to the project board as a ticket.
• [ ] Code is DRY, reusable, follows SRP and trends toward function purity
• [ ] I've updated the project board to reflect changes, add issues, or tickets