Updated styles for coaches page

[andr0272]

ADO-601

Description

List of proposed changes:

• Aligned style of the coaches page and coach component with the Miro content
• Abstracted a few elements into the global style sheet

What to test for/How to test

Pull the code, run it and navigate to /about/coaches

Additional Notes

[github-actions[bot]]

Integration Deployment :rocket: - Check build status Jest Coverage Report Cypress Coverage Report