title: Multiple html div's using same css style
body: <p>I have 2 div elements #container1 , #container2. Can i use styling in below manner ?</p>
  
  <pre><code>#container1,#container2 h5{ 
  }
  </code></pre>
  
  <p>If yes then i cudn't get it to work for #container3</p>
  
  <pre><code>#container1,#container2,#container3 h5{ 
  }
  </code></pre>
  
  <p>rule somehow doesn't seem to apply for #container3 ..
  What could be the reason ?</p>