You would add this to the custom code → before body - (Template page settings). I only looked at one template; the one referenced. It would then work anytime someone used the print dialog.
If you want a playground, this is what I used.
You would add this to the custom code → before body - (Template page settings). I only looked at one template; the one referenced. It would then work anytime someone used the print dialog.
If you want a playground, this is what I used.