<!DOCTYPE html> <html> <head> <title>CSS Transition Test: invalid values cause all properites to animate.</title> <link rel="author" title="Oleg Janeiko" href="mailto:oleg@the-incredible.me"> <link rel="help" href="http://www.w3.org/TR/css3-transitions/#transition-property-property"> <link rel="match" href="reference/transition-test-ref.html"> <meta name="assert" content="When an invalid value is specified as one of the transition properties, it causes the the transition-property to change to 'all'. Instead of leaving the invalid property in and animating the valid properites with matching durations."> <style type="text/css"> .container { background-color: red; height: 200px; width: 200px; } .box { width: 100px; height: 100px; background-color: green; transition-property: width, foo; /* invalid foo */ transition-duration: 0, 5s; } .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>