Semantic Headings / Styles Consolidation

[solaris007]

Currently visual styles do not permit to have a semantic sequence of headings. We therefore have situations where pages/blocks have breaks in the headings hierarchy: h1 -> h4 -> h5 or similar.

This has the following problems:

• Causes a penalty in the LHS accessibility score
• Is semantically incorrect (authors should create content semantically first)

Tasks:

• Enumerate and visual styles and associated expected heading levels (e.g. Miro board)
• Consolidate/move styles to allow for content to have unbroken, semantic heading levels
• Adjust CSS
• Adjust Content

cc @Acidham @karlpauls