At some point, yes CSS does control the Carousel; however, not sure how you are wanting me to answer?
Hi Ryan Rutan
Thanks for the reply.
We want to reduce the box size or remove the black space:
I guess when we reduce the box size in one place and add the CSS property in /soy/template/css-custom.soy file then it will effect to another place as well where I am using this widget as all widgets are using same CSS classes right?
Please correct if you think otherwise.
Is this /soy/template/css-custom.soy file correct for this changes?
Which file you use is definitely up to your discretion; however, I would try to bake the CSS into my theme using the Theme Wizard and/or put a single reference to a CSS file that you control into the theme...and then put all those said CSS selectors etc... there.
Hope that helps.