Not able to edit code HTML in the editor

Hi, I am not able to edit code HTML in the editor.

Working perfectly since i passed from the Survey form at “Leran te css Box Model by Building a Rothko Painitng” in Responsive Web Design Course. I try with some browsers but I have not solved the problem.
Please help me fix this problem.

Please try one of the following steps to move forward.

Click on the “Restart Step” button and force a refresh of your page with CTRL + F5 then try to write the code in again.

or - Try the step in incognito or private mode.

or - Disable any/all extensions that interface with the freeCodeCamp website (such as Dark Mode, Ad Blockers, or Spellcheckers)

or - Ensure your browser is up-to-date or try a different browser.

I hope one of these will work for you.

Thank you Ilenia.
I solved this issue: was a oversight on my part.