>But, I am trying to align the IFrame inside it, and when I work in HTML5, I just cannot move the IFrame container. This is things like that that irritates me.


iframes only purpose in HTML5 is to put in external content.

Is that what you're doing?

If you're in control of all the content, there should be no reason to use iframe.

"Proper" HTML5 is supposed to all but eliminate the need for iframe.