How To Remove Product Collection Dead Space

[stormbrieldraws]

Hi !

This is currently what all of the product collection pages on my site look like:

With the actual products only taking up about 1/3 of the screen. (I am using the Supply theme and my website is here)

But I would like it to look more like this (an example from another Shopify website):

Where the products take up almost all of the screen. I'm not sure how to achieve this on my own, if it's a matter of a different theme, or if it's a code thing.

Thanks!

[Natztech]

please share your site preview and password then provide password