Many admin functions in Civi send the user to Ajax popup boxes. Eg on the Contact screen, Membership > Add membership, Events > Add Event... and many many more through the system.
What is the best way to load custom css into these?
We are using a custom css file for the rest of Civicrm - but it's not being loaded in these ajax popups. From a load-time point of view, that's possibly a good thing! Some of our admin users are in poor internet areas, and those popups can be very very temperamental when the net is slow. So it would be great if we could just add some minor css tweaks to these popups rather than load the whole of our custom css into them.
Thanks for your ideas. Drupal 7.54, Civicrm 4.6.25.