title: style title tooltip does not work inside table
body: <p>I am trying to style tooltip <code>title</code> by following <a href="https://stackoverflow.com/questions/2011142/how-to-change-the-style-of-title-attribute-inside-the-anchor-tag">this post</a>. However, it does not work for table. In other words, it seems that <code>a[title]</code> works but <code>th[title]</code> does not.</p>
  
  <p>see the fiddle modified from the original post, where <code>th[title]</code> still uses the default style.
  <a href="http://jsfiddle.net/5frf7svm/" rel="nofollow noreferrer">http://jsfiddle.net/5frf7svm/</a></p>