block-first-child-2-dyn.html (569B)
1 <!DOCTYPE html> 2 <html class="reftest-wait"> 3 <head> 4 <style type="text/css"> 5 #separator, #first-child { 6 height: 20px; 7 background-color: green; 8 } 9 #parent { 10 margin-top: 20px; 11 } 12 #first-child { 13 margin-top: 0; 14 } 15 </style> 16 <script type="text/javascript"> 17 function test() { 18 document.getElementById('first-child').style.marginTop = '-10px'; 19 document.documentElement.removeAttribute('class'); 20 } 21 document.addEventListener('MozReftestInvalidate', test); 22 </script> 23 </head> 24 <body> 25 <div id="separator"></div> 26 <div id="parent"> 27 <div id="first-child"></div> 28 </div> 29 </body> 30 </html>