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17 lines
347 B
HTML
17 lines
347 B
HTML
<!DOCTYPE html>
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<html>
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<head>
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<style>
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span { color: red; }
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:-moz-any(:valid) + span { color: green; }
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</style>
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</head>
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<body>
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<input required><span>This should be green</span>
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<script>
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document.body.offsetWidth;
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document.getElementsByTagName("input")[0].value = "Test"
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</script>
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</body>
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</html>
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