
Originally Posted by
Twey
First of all, all CSS properties are lower-case.
Not true. The vast majority of style sheet content is case-insensitive.
All CSS style sheets are case-insensitive, except for parts that are not under the control of CSS. For example, the case-sensitivity of values of the HTML attributes "id" and "class", of font names, and of URIs lies outside the scope of this specification. Note in particular that element names are case-insensitive in HTML, but case-sensitive in XML.
-- From 4.1.3, Characters and case, CSS 2
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