​x
 
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<!DOCTYPE html>
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<title>My Example</title>
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<style>
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    .wide {
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        letter-spacing: .4em;
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    }
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    .narrow {
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        letter-spacing: -.1em;
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    }
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    p {
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        font-size: 2em;
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    }
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</style>
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​
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<p class="wide">Some random text to demonstrate the effect.</p>
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<p class="narrow">Some random text to demonstrate the effect.</p>