title: CSS div has NaN dimensions
body: <p>I'm attempting to finalize on of the pages that I am fixing for a client, and it seems that one of the div's within the page that I am attempting to add padding to won't work for vertical padding. I checked the element using chrome's dev tools, and it stated the element had "NaN x NaN" for dimensions.</p>
  
  <p><img src="https://i.stack.imgur.com/M8hZ4.png" alt="enter image description here"></p>
  
  <p>The element is clearly being displayed, but I cannot add padding to it as a result. To see what I am talking about, <a href="http://1rogue.com/shopfine/3cart.html#cart-acc" rel="nofollow noreferrer">click here</a> and look at <code>.accordion-heading &gt; .accordion-toggle</code>. It's a bit frustrating because it's preventing me from finishing this tiny bit of the page. How can an element have supposedly no dimensions, and how can I fix it? I've tried adding manual width and height, to no avail.</p>