I would like to have a button on the bottom of the screen that allows people to switch from desktop view to mobile view and vise versa. How do I do this?

Just resize your browser window - the mobile/desktop/tabler view is based on screen size, so that's how you do it.

If you want to do a button then get writing some javascript that will automate the screen resize for you, and then the button is the last thing that needs to be put in  place. Then once you've done that (put it in place at the bottom of the screen) you'll probably notice that it's going to be quicker for the user to just manually resize the window themselves instead of scrolling all the way to the bottom.

1 hour ago, Josiah Wallingford said:

I would like to have a button on the bottom of the screen that allows people to switch from desktop view to mobile view and vise versa. How do I do this?

on desktop zoom in 300% for mobile view, the only way on mobile devices to get desktop is to go to the settings in the internet ( top right ) and select request desktop version or what ever it says on your device ( This is android dunno about iOS as I hate them )