<!DOCTYPE html> <html> <head> <style type="text/css"> div { height: .5em; margin: 1em; } </style> <script type="text/javascript"> function boom() { document.getElementById("b").style.padding = ""; document.getElementById("a").style.padding = "12em"; } </script> </head> <body onload="boom();" style="-moz-column-width: 2em;"><div id="a"></div><div></div><div></div><div id="b" style="padding: 12em;">This is text</div>This is textThis is text<div>This is text</div></body> </html>