html elementhead element followed by a body element.
manifest
HTMLElement.The html element represents the root of
an HTML document.
The manifest attribute gives the
address of the document's application cache manifest, if
there is one. If the attribute is present, the attribute's value must be a
valid URI (or IRI).
The manifest attribute only has an
effect during the early stages of document load. Changing the
attribute dynamically thus has no effect (and thus, no DOM API is provided
for this attribute). Furthermore, as it is processed before any base elements are seen, its value is not subject
to being made relative to any base URI.