so I'm hoping to achieve something relatively simple. I need to add an external css reference to a CDN and a local customjs file reference to the head of my template file.
Currently I am doing this directly which is a problem as changes are knocked out each time I Update. I'm looking for a way to dynamically include this changes on a permanent basis to prevent the issue from re-occurring but I'm not sure how to go about doing this.
I am using the hadron theme for this project on Joomla 3.9.2. Any help would be very much appreciated.
Just to add to the above, Ideally it would be great to achieve this without the use of another third-party extension. Wherever possible I like to keep external resources to a minimum.