CSS in shopping cart

I am having this problem with any text showing up in the quantity box, as well as the + and - in the red quantity boxes.

Where can I change this at? I keep trying to find it with inspect element, and I just do not seem to be able to get it to work.

Hello George

Look like there are some css conflict causing this issue. Please submit a support ticket sending us super admin account of your site and the link to the page, we are going to check and get it sorted for you

Tuan