title: CSS multiple selection with square brackets
body: <p>I have this piece of code on my website:</p>
  
  <pre><code>#stage-1-picture,
  #stage-2-picture,
  #stage-3-picture,
  #stage-5-picture {
      margin-top: 20px;
      position: relative;
      z-index: 1;
  }
  </code></pre>
  
  <p>I have been wondering if there is a way to shorten this multiple selection with square brackets so that I could use some kind of a plceholder in place of the numbers 1,2,3,4,5.</p>
  
  <p>Thank you!</p>