Zvon - Web Content Accessibility Guidelines

Allow the user to search within rendered text content for a sequence of characters from the document character set.
Allow the user to start a forward search (in document order) from any selected or focused location in content.
When there is a match, do both of the following:
- move the viewport so that the matched text content is at least partially within it, and
- allow the user to search for the next instance of the text from the location of the match.
Alert the user when there is no match or after the last match in content (i.e., prior to starting the search over from the beginning of content).
Provide a case-insensitive search option for text in scripts (i.e., writing systems) where case is significant.

Checkpoint 9.8 :
Provide text search