CSS : How to edit the size of the submit button on a form?

CSS : How to edit the size of the submit button on a form?
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On Google, Search for "hows tech developer connect"

As promised, I'm going to share a hidden feature with you.
This is a YouTube's feature which works on Desktop.
First, Ensure that the video is playing before proceeding.
Then, type the letters 'awesome' on the keyboard.
It will change your youtube progress bar into a flashing rainbow.

A little intro about me,
Salutations, my name is Delphi.
I am willing to help you find the solutions to your questions.
CSS : How to edit the size of the submit button on a form?
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: edit button of the submit to CSS How size on a the form?