Have a look :
On the developers page, chose step one, fill in the details, get the code and choose html5.
Copy/paste item 1 and 2 in the SAME html snippet in the same order.
In case of doubt, look at the source :
I added a div to force the HTML snippet to the required size. Oherwise, drag the handles.
Oh, Apple, do I live to see the day that I can edit/format posts on my iPad?