RapidWeaver Stacks add-on info:
A pretty simple stack mainly developed for the SideCar Stack but will work with all other stacks. Uses the CSS3 column property to create easy text columns. Pure CSS – no scripts. You can define number of columns, column width, gap, divider, breakpoint.
Works fine with images too. A simple and useful Stack.
RapidWeaver, stacks, responsive, free stack.