CSS 21998 May 12th

W3C issued official recommendations for CSS 2 specification. The second cascade style specification included a number of new features such as absolute, relative and fixed positioning of elements, z-index for element overlap, minimum and maximum width or height of elements, type of media, etc. In June 2011, W3C published a revision of the second version of cascading styles, CSS 2.1.

CSS 2 specification 1998
Cascading Style Sheets, level 2 CSS2 specification 1998

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