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the original test displayed the word "ERROR" on the bottom part of the face.

In March 2008, Ian Hickson released Acid3 as a follow-up to Acid2. While Acid2 primarily tests CSS, Acid3 focuses more on JavaScript and other "Web 2.0" technologies.

Microsoft's response

In July 2005, Chris Wilson, the Internet Explorer Platform Architect, stated that passing Acid2

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