How to make a Python pop-up with it's whole screen just a HTML website?

I want to make an ANY POP-UP that just fits it's whole screen into just a HTML content from the website. So, how to do it, again?

PS: If you don't understand what I mean, watch this:

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Answered by SixBeeps [earned 5 cycles]
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@RixTheTyrunt This is something you can look up yourself, but the method you're looking for is Tk.title(str).