How does a web page have an invisible undeletable ad space?

[Reply]

@Lumpy

I’m not sure how to post screenshots, and at this late hour I’m too tired to figure it out.

It’s a pain in the ass. Images uploads are disabled here, so you have to post them elsewhere. If you want to try in the future, see this thread for instructions: ImgBB on an iPhone, steps to display images for the SDMB