|  | <!DOCTYPE html> | 
|  | <html> | 
|  | <head> | 
|  | <title>CSS Transition Reference File</title> | 
|  | <link rel="author" title="Oleg Janeiko" href="mailto:oleg@the-incredible.me"> | 
|  | <style type="text/css"> | 
|  | .container { | 
|  | background-color: red; | 
|  | height: 200px; | 
|  | width: 200px; | 
|  | } | 
|  | .box { | 
|  | width: 100px; | 
|  | height: 100px; | 
|  | background-color: green; | 
|  |  | 
|  | transition-property: width; | 
|  | transition-duration: 0; | 
|  | } | 
|  | .box.transition { | 
|  | width: 200px; | 
|  | height: 200px; | 
|  | } | 
|  | </style> | 
|  | <script type="text/javascript" charset="utf-8"> | 
|  | function ready(){ | 
|  | var box = document.querySelector('.box'); | 
|  | box.className = 'box transition'; | 
|  | } | 
|  | </script> | 
|  | </head> | 
|  | <body onload="ready();"> | 
|  | <div> | 
|  | <p>You should not see a red background during the transition. Note: if the test passes transition is instant.</p> | 
|  | </div> | 
|  | <div class="container"> | 
|  | <div class="box"></div> | 
|  | </div> | 
|  | </body> | 
|  | </html> |