Hi @HugoGiraudel, thanks for your hint. I updated my Gist to better handle the unit conversion.
The only small issue I cannot solve is using '%' for comparison as % alone would lead to an Invalid CSS error.
Hope I did it better this time. 
Hi @HugoGiraudel, thanks for your hint. I updated my Gist to better handle the unit conversion.
The only small issue I cannot solve is using '%' for comparison as % alone would lead to an Invalid CSS error.
Hope I did it better this time.