title: Understanding the difference between .body and body
body: <p>I am not sure if I understood it correctly. When styling in CSS like this:</p>
  
  <pre><code>body {
  }
  </code></pre>
  
  <p>I'm referring to an element that belongs to HTML. When I write something like this: </p>
  
  <pre><code>.body {
  }
  </code></pre>
  
  <p>I'm referring to a class name given by me. Is this correct?</p>