Acid2 is a test page for web browsers published by the (WASP). It has been written to help browser vendors make sure their products correctly support features that web designers would like to use. These features are part of existing standards but haven't been consistently supported by major browsers. It is not supposed to resemble a real-world web page and it is not solely designed to test browser support for ; it contains complex rules that cascade in the most advanced ways possible. Browsers who currently pass the Acid2 test are few in number. The 7 team has publicly stated that they will not even attempt to pass the Acid2 in time for IE.

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