block-first-child-6-dyn.html (592B)
1 <!DOCTYPE html> 2 <html class="reftest-wait"> 3 <head> 4 <style type="text/css"> 5 #separator { 6 height: 20px; 7 background-color: green; 8 } 9 #first-child { 10 height: 20px; 11 margin-top: 20px; 12 background-color: blue; 13 } 14 #parent { 15 margin-top: 0px; 16 } 17 </style> 18 <script type="text/javascript"> 19 function test() { 20 document.getElementById('parent').style.marginTop = '-20px'; 21 document.documentElement.removeAttribute('class'); 22 } 23 document.addEventListener('MozReftestInvalidate', test); 24 </script> 25 </head> 26 <body> 27 <div id="separator"></div> 28 <div id="parent"> 29 <div id="first-child"></div> 30 </div> 31 </body> 32 </html>