Looking for an experienced Front End Developer who can help me fix a CSS bug in a WordPress theme. The issue is with a "background-attachment: fixed;" CSS property on MacOSX Retina devices. It causes frame dropping and lag when scrolling. We need to find a workaround to this and make sure it doesn't happen anymore.
You need to be able to make sure everything works smooth on OSX Retina Laptops and Desktops.
I've provided the zip file for the WordPress theme.