border:

The border attribute sets the width of a border around the frameset.

This attribute is a browser specific attribute that may or may not work in all web browsers. It's strongly recommended that you use the CSS property border instead.

Used with Elements:

• frameset

Content:

Number(in pixels)

Default:

Not required

Deprecated in XHTML 1.0:

Yes

DTD:

Not part of a standard

Other Tags with Border Attributes:

• Border for images

• Border for tables