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- <!DOCTYPE html>
- <html>
- <!-- Test: if button has a disabled fieldset ancestor, it is barred from
- constraint validation and should not be affected by :valid
- pseudo-class. -->
- <link rel='stylesheet' type='text/css' href='style.css'>
- <body>
- <fieldset disabled>
- <fieldset>
- <button class='notvalid'></button>
- </fieldset>
- </fieldset>
- </body>
- </html>
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