Video wont show, DIV layout Options

[Tomates]

So im trying to put a youtube video on a DIV layout i made.
However when i add the video it makes my layout completely dissapear including the video itself.
How do i get that to not happen?

Is there something special i need to add or do?

[silent-rebirth]

If you have this code you might want to delete it and see if that works.

CODE

td td embed, td td object{position:absolute; left:0px; top:0px; width:1px; height:1px;}

[Tomates]

If you have this code you might want to delete it and see if that works.

CODE

td td embed, td td object{position:absolute; left:0px; top:0px; width:1px; height:1px;}

if your getting that from the other part the person said that didnt fix it either.
and plus i dont see that part in my code ;A;