[H2 headers in all Gatsby websites on mobile] AutolinkHeader-module--anchor adds "empty row" in a multitude of occasions

[DragosRistici]

The anchor that preceds the H2 headings on desktop goes AFTER the heading on mobile with an opacity:0, which means its still there. This creates a lot of random spacing problems on a lot of H2 headings on mobile, on every Gatsby website in the Carbon environment.

carbon.heading.issue.mov

second.proof.mov

If you just add a display:none for the mobile, that would be great. You don't need it on mobile anyway.

[DragosRistici]

@alisonjoseph @mattrosno

Hey Alison & Matt,

I looked into this requested by @mjabbink who caught it this past Friday. Thx!