How to make a function to open a website in fullscreen mode by pressing a button?

How to make a function to open a website in fullscreen mode by clicking like on this website - https://osjsv2.0o.no/5f9fc55a18d24ef299477d6f882521de.png
July 2nd 19 at 18:21
1 answer
July 2nd 19 at 18:23
Solution

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