Hey @npostulart. Unfortunately, your code incorrectly handles units by treating these as strings. More information in a recent SitePoint article: http://www.sitepoint.com/understanding-sass-units/. Cheers. 
Hey @npostulart. Unfortunately, your code incorrectly handles units by treating these as strings. More information in a recent SitePoint article: http://www.sitepoint.com/understanding-sass-units/. Cheers.