The site has been hammered down by google now and will be unranked since this story broke.
https://html-online.com/editor/
In case you cannot view it the banner across the site says now "Goodbye!
This site has been penalized for unnatural link building and will be removed from Google Search
Please bookmark if you wish to continue use of the site.
We are sorry and are working on fixing the problem to recover from the penalty. "
They are only sorry they got caught