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If an RGBA value is given for border-color, the validator returns this error: Value Error : border Too many values or values are not recognized : 2px solid rgba(18,143,53,0.3) 2px solid rgba(18,143,53,0.3)
idem for text-shadow and box-shadow
Broken for almost 2 years now!! CONGRATS! An example of a valid syntax it reports as an error: text-shadow: rgba(0,0,0,0.5) -1px 0, rgba(0,0,0,0.5) 0 -1px, rgba(0,0,0,0.3) -1px -2px; Also, the link it produces to text shadow is dead: http://jigsaw.w3.org/css-validator/nulltext.html#propdef-text-shadow
Supported in the current version.
The current version still says, that a valid rgba-value is an error for the outline-property... example: .thinOutline, .tile, ul.tiles li a, .mainnav ul li a, ul.subnav li a { outline: rgba(0, 0, 0, 0.25) solid 1px; outline-offset: -1px; }
The bug report was for the 'border' spec. It is _not_ the same issue as the one with 'outline' (which was just fixed), so please do not reopen this bug for random properties, open a new one, thanks! (and thanks for the report for outline).