| <!DOCTYPE html> | 
 | <script src="../resources/testharness.js"></script> | 
 | <script src="../resources/testharnessreport.js"></script> | 
 |  | 
 | <div id='container'> | 
 | <div id='element'></div> | 
 | </div> | 
 |  | 
 | <script> | 
 | var element = document.getElementById('element'); | 
 | var container = document.getElementById('container'); | 
 |  | 
 | test(function() { | 
 |     element.style.fontSize = '10px'; | 
 |     var player = element.animate([ | 
 |         {backgroundPosition: '10% 1em'}, | 
 |         {backgroundPosition: '20% 5em'}], | 
 |         10); | 
 |     player.pause(); | 
 |     player.currentTime = 5; | 
 |     element.style.fontSize = '20px'; | 
 |     assert_equals(getComputedStyle(element).backgroundPosition, '15% 60px'); | 
 | }, 'Background position responsive to style changes'); | 
 |  | 
 | </script> |