Using a MU install.
I created the following folder structure:
As soon as I add that cart.php file into that folder with NO modifications applied to it, my cart page buttons (Apply Coupon & Update Cart) get changed to have a transparent background. I can only see them if I hover where they should be.
I am looking to modify the file located at:
However, I'm not sure why those 2 specific buttons are being effected.
The CSS for the hover effect seems to still work, just not the default background color.