Simon: I solved it! Now for responsiveness[Solved]

Simon: I solved it! Now for responsiveness[Solved]
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#1

Pleased to say I fixed my Simon game during the night–without internet, even (downloaded jQuery).
https://s.codepen.io/LaerTrech/debug/GNGaJy
(Played around with Wacom tablet I got for Christmas on game and background some.)
Anyway, responsiveness still to be done. I tried a media-query for #the-game, the parent node of all that’s in the game, but am not having any success. Does anyone have any advice for an easy way to resize the entire game on smaller screens (make it larger)?