You can use Wave (the Structure tab) or the Firefox Document Outline to verify that the headers are in a relevant order. You can test with a screen reader too, because some of the headers are in acesshide. Create a Quiz with sections Start the Quiz On every page, there's only one H1 In a Quiz page : The Quiz name is now a H2 header The navigation bloc header is now a H2 The sections headers are H3 The headers in the main content and in the navigation bloc doesn't skip a level, they are now in a hierarchical order. Click to toggle messaging drawer Verify the header structure The new header "Messaging drawer" is a H2 in accesshide The header "Message contacts" is now a H3 in acesshide The new header "Messages search results" is a H3 in acesshide Click setting icon in messaging drawer The header "Message settings" is now a H3 in acesshide The headers "Privacy", "Notification preferences" and "General" are now H4 Note 1 : The headers in the messaging drawer changed levels, but the aspect or the size did not change. The additionnal headers are in accesshide. Note 2 : We didn't fix all the messaging headers, but we did the most important ones, so the Quiz can stay accessible. Close the messaging drawer Click to finish attempt In the Summary of attempt : The Quiz name is a H2 header Click to Submit all and finish Confirm to Submit all and finish in the popup In the review summary page : The Quiz name is now a H2 header The header "Review summary" is a H3 Click to finish review The Quiz name is a H2 header The header "Summary of your previous attempts" is a H3