what is a s tag? waht does it do?

Answer 1

Xaniar ,
"The HTML <s> element renders text with a strikethrough, or a line through it. Use the <s> element to represent things that are no longer relevant or no longer accurate."
~MDN

There is a documentation on this site : https://developer.mozilla.org/en-US/docs/Web/HTML/Element

You can always search on net for use and syntax of any tag.
https://developer.mozilla.org/en-US/docs/Web/HTML/Element/s

If it can be googled you shouldn't waste time waiting for someone else to (GTFY &) answer ;)

Answer 2

Thank you. It's literary a del tag.