How to make a video (iframe) pop up when clicked on play?

Question

I started making my website just recently, and realized I needed to make the YouTube video (iframe) popup because it would be too small to just watch it where it is.
This is what I got so far
https://code.sololearn.com/Wg6X9ZJL5o5H/?ref=app
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Answer 1

// You can use modal view, Here is a reference code but don't copy ;)
https://code.sololearn.com/WFzRBjR58MU7/?ref=app