I visit HN every day and I am either dumb or missed something but I had no idea why the black bar was at the top. I assumed it was an error.
Unless you know what it is, it's really not obvious at all. A flag at half-mast is a commonly known thing, someone important died. A 5 pixel black bar at the top of a site is not used anywhere but here.
Unless you know what it is, it's really not obvious at all. A flag at half-mast is a commonly known thing, someone important died. A 5 pixel black bar at the top of a site is not used anywhere but here.