:root
Structural pseudo-class, E:root represents an element that is the root of the document. (In HTML 4, this is always the HTML element).
:visited
Pseudo class for an element that has been visited an is within the browsers history.
See also:
:right
Pseudo class, a right facing page when @page has been used.
:left
Pseudo class, a left facing page when @page has been used.
