Compatibility styling constitutes basic CSS alterations to better integrate the extensions with the template, rather than full theme integration. Example extensions: K2, Tienda, JComments, Virtuemart and JomSocial.
Enabled or Disable from Admin → Extensions → Template Manager → rt_zephyr_j15 → Advanced → Third Party Styling. Disable if you are not using any of the extensions for performance purposes.
This is the Popup Module feature. Assign any module to the popup module position, and ensure that the Popup Feature is enabled in the Gantry Administrator.
You can configure its height and width from the Gantry Administrator.