A problem I have with applying ZM to popups is getting it to automatically adjust its height to popups of varying sizes.

As I see it the global height of popups is determined by padding-top of .mfp-iframe-scaler class.

I've seen elsewhere online mention of specifying height in the autoload functions and using a different function for each popup, although I haven't worked out how to do this yet.

Perhaps there's an easier way?