B.19. border-width
The border-width property sets the width of the border surrounding the selected element(s).
The widths for each side may be set individually using the border-bottom-width, border-left-width, border-right-width, and border-top-width properties.
Inherited: No
B.19.1. Value
thin, medium, thick, or any CSS length measurement.
You can specify from one to four different values to specify different border widths for each side of the element, as shown in Table B-2.
Initial value: medium (0 in Netscape 4)
B.19.2. Compatibility
CSS Version: 1
Works in all CSS-compatible browsers, including Internet Explorer 4 and Netscape 4.
Note that Netscape 4 defines a default border width of 0, so in addition to a border-style, you must also ...
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