Sa11y is an accessibility quality assurance tool that visually highlights common accessibility and usability issues. Geared towards content authors, Sa11y straightforwardly identifies errors or warnings at the source with a simple tooltip on how to fix them.
Huh. I thought I excluded <style> tags already, I should also test <noscript> too while I'm at it. Thanks for the bug report @brianteeman, I'll have this fixed shortly!
How to reproduce
Create a basic html page as below and use the sa11y bookmark
Expected Result
Actual Result