title: do I have to re-type class for each element I want to alter under that class?
body: <p>This is a simple question but I didn't know how to word it, but would I have to re-type the class for each element I want to alter under that class?</p>
  
  <p>For example:</p>
  
  <p>Can I just do</p>
  
  <pre><code>.update-content&gt;h1,h2,h3,h4,h5,h6 {}
  </code></pre>
  
  <p>or do I have to do like this?</p>
  
  <pre><code>.update-content&gt;h1,
  .update-content&gt;h2,
  .update-content&gt;h3,
  .update-content&gt;h4,
  .update-content&gt;h5,
  .update-content&gt;h6 {}
  </code></pre>
  
  <p>I understand if the first one is wrong because the class is only pointing at the h1 element. Thanks!</p>
  
  <p>Also if anyone can answer this, I'd be glad. In HTML and CSS there are IDs and classes. What could you call them as a collective (ids, classes), identifiers?</p>