As you may know, all browsers have a set of CSS features that are either considered a vendor extension (e.g. -ms-interpolation-mode), are partial implementations of properties that are fully defined in the CSS specifications, or are implementation of properties that exist in the CSS specifications, but aren’t completely defined. According to the CSS 2.1 Specification, any of the properties that fall under the categories listed previously must have a vendor specific prefix, such as ‘-ms-’ for Microsoft, ‘-moz-’ for Mozilla, ‘-o-’ for Opera, and so on.
As part of our plan to reach full CSS 2.1 compliance with Internet Explorer 8, we have decided to place all properties that fulfill one of the following conditions behind the ‘-ms-’ prefix
http://blogs.msdn.com/ie/archive/2008/09/08/microsoft-css-vendor-extensions.aspx
]]>Something to play with on my free time.
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