<!DOCTYPE html> <html> <head> <style type="text/css"> div { height: 1px; } </style> <script type="text/javascript"> function boom() { var a = document.getElementById("a"); a.firstChild.remove(); document.documentElement.style.outline = "none"; } </script> </head> <body onload="boom();"> <div style="column-count: 2;" id="a"><div><div style="float: right;"><div></div><span><div></div></span></div></div></div> </body> </html>