title: HTML/CSS show/hide multiple elements?
body: <p>I'm looking for an HTML/CSS solution to this challenge:
  I have multiple elements with the same class or same id, and I want to show/hide them all at the same time, using a button or toggle switch. So I then have a click event, when I click that class or ID representing all those elements, they all hide. When I click again, they must show again.</p>
  
  <p>I would appreciate</p>
  
  <p>Thanks</p>