Hi Andrew,
Suppose that you’re using 2 sidebars, you will open this file:
root/templates/ja_social_ii/tpls/blocks/mainbody/two-sidebar.php
As you can see the 3 parts: main content – sidebar-1 – sidebar-2 are included in a div tag with row class. In Bootstrap, each row will have 12 grids, by default, the content part will have ‘col-xs-12 col-md-6 col-md-push-3’ class which is equal to 6 grids, and 3 grids for each sidebar.
You can change the width of sidebar by changing the number of grids but make sure that the total grid is equal to 12. For example, if you want to reduce the width of both sidebar from 3 grids to 2 grids, you will change to col-md-2, then increase the grid for ‘main content’ part to make sure that the total grid is 12.
The documentation I sent above gives details of how to work with grid.
pls check it out.
Regards