Adding a border around tab and picture

Hi again!

Thank you so much for all your support so far. We are almost there! I was wondering if there was a way of adding a border around the tabs and image for each section of my products page.

http://hedgeports.com/fitness-exercise-equipment/

I am trying to make it look less empty, something of a grey scale border, same default for theme would work well, I would like the border to surround whatever content is included in my section when I use the avia layout builder. For example, in the first product : the Vinyl Kettlebell, I would like to include a border around the tabs and image, when I click on the tab the border should extend automatically.

Is this possible, is there something in place for this?

Thanks!