39) for an easy way to remember the
shorthand order.
Value
The property takes a CSS length (px, pt, em, and so on) or one of the allowed
keywords; percentage values are not allowed.
Negative length values are illegal.
Note that a border will only be visible as long as a border-style has been set. The
default for border-style is none, which means that no border will display, and the
border-width will be reset to zero.
The keyword width values of thin, medium, and thick aren??™t explicitly defined??”their
display will depend on the user agent??”but have the following meaning: thin <=
medium <= thick.
As an example, Internet Explorer versions (up to and including 7) size thin, medium,
and thick borders at 2px, 4px, and 6px respectively, while Firefox 2.0 sizes them
at 1px, 3px, and 5px.
SPEC
version initial inherited
CSS1 medium NO
BROWSER SUPPORT
Op9.2+ Saf1.3+ FF1+ IE5.5+
FULL FULL FULL BUGGY
255 Box Properties
Compatibility
Opera Safari Firefox Internet Explorer
9.2 3.
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