RTL incompatible value

[yarons]

website/src/css/_base.scss

Line 72 in 9433cb2

margin-left: $spacing-unit;

This property is strictly for LTR languages, for RTL we will need to allow an RTL variant of it (margin-right).

I'm not sure how to add the correct variant but we've added html[dir=rtl] in the past.

Thanks.