<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>Content Appended in Pagination before ::after (alternate)</title> <style type="text/css"> body { font-size: 16px; } #colset { height: 200px; width: 450px; -moz-column-width: 150px; -moz-column-gap: 0; -moz-column-fill: auto; border: 3px solid silver; } #x { height: 500px; } #x:after { display: block; height: 220px; content: ""; border-top: 4px solid blue; } #shift { height: 201px; border-bottom: 4px solid blue; } </style> </head> <body onload="document.getElementById('x').appendChild(document.createTextNode('This must be in the second column between two 4px blue lines.'))"> <div id="colset"> <div id="x"> <div id="shift"></div> </div> </div> </body> </html>