<!DOCTYPE html>
<html>
<head>
<script>
document.documentElement.getBoundingClientRect()
document.documentElement.innerHTML = "<input placeholder=e type=number readonly>"
document.designMode = "on"
document.execCommand("inserttext", false, "")
document.designMode = "off"
document.documentElement.style.display = 'none'
</script>
</head>
</html>
