title: How to disable blue selection on double click, in table header?
body: <p>I have followed table header structure:</p>
  
  <pre><code>&lt;th&gt;
   &lt;a ng-click="sort_by(order)" style="color: #555555;"&gt;
     &lt;span ng-transclude=""&gt;
         &lt;span class="ng-scope"&gt;Some text&lt;/span&gt;
     &lt;/span&gt;
     &lt;i class="icon-chevron-down"&gt;&lt;/i&gt;
   &lt;/a&gt;
  &lt;/th&gt;
  </code></pre>
  
  <p>The problem is, when I double click on header link, the background is selected (blue color) and seems messy. </p>
  
  <p>How to avoid this behavior?</p>
  
  <p>Thanks, </p>
  
  <p><img src="https://i.stack.imgur.com/QwIkB.png" alt="enter image description here"></p>