You could have relatively positioned div wrap around a 'frame' of a TV (with a transparent screen), then have the tv 'frame' and the iframe be absolutely positioned inside of the wrapper (with the iframe having a z-index lower than the 'frame' image).
i think what you want to do is make a div box and then make the background of the div box the image you are wanting. then, place the iframe within the div box. this would be similar to what i have on my fragrance page where the perfume information populates
if you mean the cat, not sure but it might be because you're linking the image directly from the neocities website instead of hosting it yourself
@proletarian-library that makes sense