RapidWeaver Stacks add-on info:
Advanced two-column stack. Most advanced responsive two-column around. Option to split Content Column into x number of text or image columns (CSS Columns). Add background
The SideCar Stack is used on every RapidWeaver stacks page on defligra.com – you're looking at it right now.
One column defined as fixed, one as fluid – option to ‘swap’ the columns (left to right).
RapidWeaver, stacks, responsive, columns, grid.