What is wrong with freecodecamp

Hi ! I would appreciate if you could explain and help to figure out this problem
I don’t understand what is wrong with FREECODECAMP interface ,design , WHY it is WHITE
why it is NOT WORKING when i click “RUN IT” button .
It used to be BLACK before changing the website !!
Thank you in advance

The new version of the platform was released a couple of months ago.

You will need to be more specific about what is not working when you click “RUN IT” button? I am not aware of a RUN IT button. The challenges have a Run the Tests button. Is that what you are talking about?