title: how to open different URLs in iframes using JavaScript and HTML buttons
body: <p>So I want to make a small website with a menu that has four HTML buttons. Instead of the buttons opening a completely new website I just want an iframe tag to change the URL it's displaying according to the buttons that are pressed.</p>
  
  <p>Please keep it simple, I am a beginner in HTML, JS and CSS.
  Thanks!</p>