Hoping to get some advise.

Say I have two pages: www.myDomain.com/page1.php and www.myDomain.com/page2.php.

I now want to make page1 appear 30% of its normal size so I can insert it into page2.

Fortunately, I have the ability to add some final CSS to page1 using some sort of server script.

Is there any reason I won't be able to shrink it? I expect my final added CSS can override the earlier styles to shrink fonts, padding, margin, etc. Could I do the same for images if the images are actually part of the HTML? Anything I am not thinking of which is going to prevent this?