In-Browser Style Linter от Howard Chiam

Do quick style checks on your page after it renders, without leaving your browser, and with minimal friction to setup.

1. Add settings.
2. Run in-browser.
3. See red buttons.

In order to annotate your page, this extension reads and modifies your page's DOM.

More info: https://github.com/hchiam/in-browser-style-linter