title: What is <span>content</span> == $0 mean in html?
body: <p>I found a button in the google cloud front end that uses this syntax and I was just wondering what it is all about... Thanks for the input!</p>
  
  <p><a href="https://i.stack.imgur.com/RVPAy.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/RVPAy.png" alt="enter image description here"></a></p>
  
  <p>I love design patterns and have been getting more into web development lately so forgive me if this is a really basic question!</p>