​x
 
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<!DOCTYPE html>
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<title>My Example</title>
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​
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<style>
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  .filtered {
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    filter: hue-rotate(180deg);
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  }
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</style>
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​
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<img src="/pix/samples/20s.jpg" alt="Sample image">
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<img class="filtered" src="/pix/samples/20s.jpg" alt="Sample image">