The Calm logo.CalmThe Calm app bought some prime advertising space on election night.It bought ad blocks on CNN, ABC, and Comedy Central to give viewers "30 seconds of silence.""I give this campaign an A+," said Pauline Brown, a marketing professor at Columbia Business School.President-elect Donald Trump cruised to victory on election night, and dozens of breaking news alerts went live as swing states were called.Calm, a mental fitness company that creates meditation products on its subscription-based app, decided to buy some advertising space — and give viewers some respite from the news.The company purchased 30-second blocks on CNN, ABC, and Comedy Central from 5:30 p.m.