New ask Hacker News story: Ask HN: Why is there sometimes a black line at the top of HN?

Ask HN: Why is there sometimes a black line at the top of HN?
6 by sambroner | 2 comments on Hacker News.
Every few months, there's a black line across the top of hackernews. It's a with a static black gif ("s.gif") in it. It's typically there for a few hours or days before disappearing. What's up with that? Example: https://ift.tt/3exjXdV

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