border-bottom-width, border-left-width, border-right-width, border-top-width, border-width attribute

Used By:All block elements

The border-width series of attributes sets the width of the border on any block element. All the borders may be set to the same width using the border-width attribute, or an individual side may be set by using the appropriate value.

These two lines both set the bottom border to a 1pt wide dotted red line

P { border-bottom-width:1pt, border-bottom-style:dotted; border-bottom-color:red }
P { border-bottom:1pt dotted red; }