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<!DOCTYPE HTML>
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<html>
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<title>Reftest, bug 1156456</title>
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<style>
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body {
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background: #2a4;
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}
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@keyframes HoldOpacity {
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from, to {
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opacity: 0.6;
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}
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}
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div {
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width: 200px; height: 200px;
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background: #c37;
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animation: 10s HoldOpacity infinite;
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}
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</style>
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<div></div>
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