<!DOCTYPE html> <html><head> <meta http-equiv="content-type" content="text/html; charset=windows-1252"> <script> function boom() { x.style.display = "contents"; } </script> </head> <body onload="boom();"> <div style="-moz-column-width: 1px;"> <div style="display: grid;"> <div style="height: 200px;">v</div> <div style="height: 200px;" id="x">x</div> </div> </div> </body> </html>