fancybox v3.5 - Using trigger element
Sometimes you might need to start fancybox from different element - simply use data-fancybox-trigger attribute with the value of fancybox group name.
This allows to avoid content duplication in the gallery. For example, start fancybox when clicking on featured image.
Optionally, use data-fancybox-index attribute to specify INDEX OF STARTING ELEMENT.
