Howto get bootstrap grid row or grid container width in pixels by aurelia.
I tried to find this on the bootstrap website but I'm still confused because there are several dimensions for width: col-xs, colmd... but in fact, we are just using 4 dimensions: col-3, col-6, col-9, col-12, and nothing more, so basically I need to get that full width in order to translate pixels to col-x again to match resizing from an HTML element.