title: Fixing the tab border
body: <p>I want to make tab panel with two tabs over the entire width in <code>HTML</code>. I found and example, but I have a tiny problem. When I select the second tab, there is a break between right tab border and right panel border.</p>
  
  <p><img src="https://i.stack.imgur.com/YT0g0.png" alt="enter image description here"></p>
  
  <p>What should I do? Help me please fix it. </p>
  
  <p><a href="http://jsfiddle.net/ppf083f4/5/" rel="nofollow noreferrer">JSFiddle</a></p>