Hi @eyreseyy,
Thanks for reaching out.
It seems you want to change the layout of your WooCommerce site. This can indeed be achieved through CSS, but it also depends on the specific changes you want to make.
Custom CSS can be added to your theme’s style.css file or via Appearance > Customize > Additional CSS in your WordPress dashboard.
However, since you mentioned that your theme is custom and you’ve inherited it along with several plugins, it’s crucial to ensure that the changes won’t conflict with the existing setup.
I would recommend creating a child theme first, so your changes won’t be lost when the parent theme is updated. As you are using a third-party theme, you may want to consider hiring a developer, as this is beyond our scope of support.
I wish I could help more, but hopefully, this gets you going in the right direction to get some further insight/information.