ELA8, CSS, Sferrazza

The deep web, invisible web, or hidden web are parts of the World Wide Web whose contents are not indexed by standard search engines for any reason. The content is hidden behind HTML forms. The opposite term to the deep web is the surface web, which is accessible to anyone using the Internet. The deep web includes many very common uses such as web mail and online banking but it also includes services that users must pay for, and which is protected by a paywall, such as video on demand, some online magazines and newspapers, and many more. Computer scientist, Michael K. Bergman, is credited with coining the term deep web in 2001 as a search indexing term.

Adapted from https://en.wikipedia.org/wiki/Deep_web#cite_note-cthw-3