Pricing component with toggle using vanilla JS

I based my solution for the toggle switch on Scott O'hara's implementation, which involves the use of pseudo-elements to create the switch UI.

This is also my first time working with clamp() in order to set a fluid font size on the price. I decided to include this, because I noticed the original font size of 72px seemed a bit too large at a viewport of 320px.

Any suggestions for improvement are welcome.