Make all styles consistent

[Jade-ux]

If you find styling things that need to be changed please add them to this card (add a new comment)

• but please don't change in the code
• Tanise will actually make the changes in the code
• so there is only one person making them to keep it consistent

[Jade-ux]

I think all pages could have this style of heading and subtitle:

[CallumDennisIE]

Headers can look a little weird on certain screens

We should maybe rename 'Mentorship Program' to something with 1 word, like 'Search'