title: How to realise a "Please Rotate your device" screen?
body: <p>if you open this website on your mobile phone in portrait mode:</p>
  
  <p><a href="http://432parkavenue.com/" rel="nofollow">http://432parkavenue.com/</a></p>
  
  <p>You get what seems to be an Overlay notifying you that you have to rotate your device in order to view the website properly.</p>
  
  <p>How is this basically realized by CSS / HTML or Plugins? </p>