* mail, web, web_editor, website_sale Tricky difference between LESS and SCSS: `0 -$var` will be one value in SCSS (the result of 0 - $var) but two space-separated values in LESS.
* mail, web, web_editor, website_sale Tricky difference between LESS and SCSS: `0 -$var` will be one value in SCSS (the result of 0 - $var) but two space-separated values in LESS.