How to make a website light/dark toggle with CSS & JS

A look at how to create a dark mode toggle switch using JS, which saves the person's preference in localStorage for the next time they visit.

Code from this video: https://codepen.io/kevinpowell/pen/EM...

///// Change to dark mode using a media query instead!    • Dark mode with a media query!  

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How my browser refreshes when I save:    • How to automatically refresh your browser ...  

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