How do I edit the font size of the Model and Qty on the product's page? I would like to enlarge it.
I tried adding "font-size" to the stylesheet.css but it didn't change anything.

ZC Version: 1.5.6a
PHP Version: 7.1.26 (Zend: 3.1.0)
Website: m i l t o n g r e e n s t a r s . c o m

Any help would be appreciated.
Thank you!