<!DOCTYPE html> <html> <body style="border:3px solid;"> <div style="float:left;">Kitty</div> <div> <div><div style="clear:both"></div></div> Kitty <div style="clear:both">.</div> <div style="float:left;"></div> </div> <div id="i">x</div> <div style="clear:both"></div> <script> document.body.offsetTop; document.getElementById("i").textContent += "x"; document.body.offsetTop; document.getElementById("i").textContent += "x"; </script> </body> </html>