Loading content and animation

I observed that the bbq-content is display before all elements are loading. In fact, I think the css pagination is not loaded at the end of the ajax loading.
When the content loaded via ajax appears after loading, the css content is not take in account. So I see the css pagination in action after loading. So my container size, font and background colors (for example) are display after and all the things move.
This is not really clean.

Is there a way to wait that all content and css are loaded before to display it?

I have an other question about the way that the bbq-content is displayed. Is it possible to add an animation insteed of just showing the content suddenly? Like add this kind of animation:

'$( '.bbq-content' ).animate({ height: "100%" },1000);'

I tryed to add this animation but it don't works great....

Sorry for my english, I'm french...