Revert "More left/right space around introduction for HAS"

This reverts commit bd8161a673ef27419ea3e22108d5fc4bbb1e9885.
Better way of putting space around the intro text.

[#59367158] Padding the containing box rather than just the introduction text.

https://www.pivotaltracker.com/story/show/59367158
Better fix for too-long activity titles

This should address [#60420874] if it comes up again.

https://www.pivotaltracker.com/story/show/60420874