Is it posible to edit icons and font in metafields?

Hello everyone!

Ive recently decided to use some metafields(collapsible taps) to highlight information about shipping, return, contact and so on. However I find it very hard to customize. I would like to change icon sizes, font type-color-size and so on. Is there a way i can do this where it only effects the metafields on product page? I have uploaded a few images to show the problem. Also, is it posible to add new icons to metafields besides the ones that are available from the list you can see on image 2?