Context Navigation

Changes between Initial Version and Version 1 of Ticket #60374, comment 1

initial	v1
10	10	- Twenty Fifteen and Twenty Seventeen have a medium gray background with dark text on hover/focus.
11	11	- See #59924 for Twenty Nineteen.
12		- Twenty Twenty-One does not have contrast problems, but the caret looks odd inside the button and the button's negative `outline-offset` makes it cover text.
	12	- Twenty Twenty-One does not have contrast problems //except// when hovering over links in the modal, but the caret looks odd inside the button and the button's negative `outline-offset` makes it cover text.