title: CSS Auto hide elements after 5 seconds
body: <p>Is it possible to hide element 5 seconds after the page load?
  I know there is <a href="https://stackoverflow.com/questions/683363/jquery-autohide-element-after-5-seconds">a jQuery solution</a>.</p>
  
  <p>I want to do exactly same thing, but hoping to get the same result with CSS transition.</p>
  
  <p>Any innovative idea? Or am I asking beyond the limit of css transition/animation?</p>