iFrame content doesn't show in IE8 [duplicate]

Answer 1

For visibility of Lukx's comment, the real answer is to set position:relative on the iframe itself, since you might not have the ability to edit the html source page or it might need to use relative positioning.

Just add this CSS and you should be all set:

iframe {
    position: relative;
}

I wrote up a full description of the problem in this answer

Answer 2

Found it.

The iframed content had the following css rule:

html{ position: relative; }

Removing it helped a lot.