Primary and secondary column widths should be defined on the administration page.
The main content width could be easily calculated in the theme preprocess and passed with variables to the page template.
Feature implemented and published on Bootstrap Barrio Subtheme.

Comments

markhalliwell’s picture

markhalliwell
Primary language English
commented
Status: Needs review » Closed (duplicate)
Related issues: +#2128129: Provide setting to change sidebar/content widths

Yes. We have already implemented this in 7.x-3.x-dev and has been moved to 8.x to be refined.