title: CSS-3 'target-new' and html5 target='_blank' for opening in new tab
body: <p>I was looking into a solution for opening a page in new tab and then i landed on the CSS-3 property  <a href="http://www.w3.org/TR/2004/WD-css3-hyperlinks-20040224/#target-new" rel="nofollow">target-new</a> </p>
  
  <p>It states that: "If a user wanted to have new windows open in new tabs instead, she could use the following user style sheet to do so:</p>
  
  <p>*{ target-new: tab ! important }"</p>
  
  <p>I have couple of questions on it:</p>
  
  <ul>
  <li>How it functions internally?</li>
  <li>Why we don't have a property like target="_tab" in html5 specification but had this property as opening a link in new tab doesn't have any direct relation with Presentation?</li>
  </ul>