Migrate `page_bundles/productivity_analytics.scss` page specific styling to CSS utilities
Background
Following on from the work in Convert ee/app/assets/stylesheets/pages/product... (#268016 - closed), we should look at the custom CSS applied to the productivity analytics page from the page_bundles/productivity_analytics.scss file and determine what is still required.
Relevant file
Implementation guide
- https://gitlab-org.gitlab.io/gitlab-ui/tailwind-config-viewer/ contains a list of utility classes that are available
- We should review the CSS styles applied and replace with a relevant CSS utility where possible
- We can use the storybook stories introduced in !166252 (merged) to verify changes
Edited by Ezekiel Kigbo