Checklist

• I have read and accepted the contributing guidelines.

Is your feature request related to a problem? Please describe

Glightbox treats every image in a post as part of one gallery, including the header image. The glightbox documentation mentions using "data-gallery" to group images into different galleries, however the Chirpy version doesn't respond to that.

Describe the solution you'd like

Can the additional features of glightbox be implemented such as being able to use either "data-gallery" in HTML and/or a markdown tag such as {: .galleryX}? This would limit scrolling too far in either direction on image-heavy pages.

Describe alternatives you've considered

No response

Additional context

No response