Fix: Hero Styles and Refactor

Design review changes made for the hero components across the site.

Please view the hero components on the landing page, the life at torchbox page and the academy page.

[ ] Add a description of your pull request and instructions for the reviewer to verify your work.
[ ] If your pull request is for a specific ticket, link to it in the description.
[ ] Stay on point and keep it small so the merge request can be easily reviewed.
[ ] Consider adding unit tests, especially for bug fixes. If you don't, tell us why.
[ ] Tests and linting passes.
[ ] Consider updating documentation. If you don't, tell us why.
[ ] If relevant, list the environments / browsers in which you tested your changes.

torchbox / careers