Is it valid to have a html form inside another html form?

A. It is not valid HTML nor XHTML In the official W3C XHTML specification, Section B. “Element Prohibitions”, states that: http://www.w3.org/TR/xhtml1/#prohibitions As for the older HTML 3.2 spec, the section on the FORMS element states that: “Every form must be enclosed within a FORM element. There can be several forms in a single document, but the FORM … Read more