Developer website: Guy D2
SeeSS Widget is a quick and handy reference sheet for 140 CSS (1, 2 & 3) properties (proprietary extensions are not included). Each property includes information on its inheritance, CSS compliancy, Safari support, all values (including defaults), some examples and an extensive description.
A link to the appropriate W3.org pages is included as well, for even more additional information.
This Widget is scrollable and stretchable, and features a unique "collapsing method", in order to save Dashboard screen estate.
*Previously available here