Can you send a screenshot of your whole editor?
Here is the screenshot @noahlovell
Ahhh okay - this is the Wix Editor (which doesn’t support CSS). There was a bug earlier this week/end of last that mistakenly made it appear within the Wix editor - which might be what you experienced.
However, CSS is a Studio exclusive feature 
I already added global css code.
Is there anyway I can modify that code now?
Unfortunately not, it was an unintended bug that was reverted 
Hello,
But the Wix Editor did support CSS, even if it was not originally intended, and we used the global.css feature on sites.
Now it’s not available anymore, non-Studio sites can’t be migrated to Studio, the code in global.css is still there but can not be changed ?
Is there a workaround ? Because I want to modify it but can’t now.