Your Iphone has a Virus pop up.

So a couple minutes ago I just went onto safari and went onto a website and it said something like “Your Iphone has been infected with a Virus, a hacker is recording everything you do on your phone, immediate action is required!” And I read up on it and it said that it was a scam, but one website said that if you press the close button it downloads a Virus and I think I might have pressed the close button and I don’t know what to do now.