ALIGN
Align the rule. Possible values are CENTER, LEFT and RIGHT. Default is
align="center".
COLOR
Draw the rule in a specific color.
INVERTBORDER
Use the invertborder attribute to draw a horizontal rule that seems raised from
the surface of the page. By default, when the invertborder attribute is not
set, the horizontal rule is drawn embossed into the surface of the page.
NOSHADE
Do not use a 3d-effect to draw the rule.
SIZE
Define the height of the rule in pixels.
WIDTH
Define the width of the rule. Values can be given in pixels or percentage of
the available width between the current left and right margins.