​x
 
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<!DOCTYPE html>
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<title>Example</title>
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<style>
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    .outer {
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        border: solid;
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        width: 280px;    
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    }
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    .inner {
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        background: gold;
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        margin: 40px;
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    }
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</style>
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​
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<div class="outer">
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    <div class="inner">This text has a margin of 40 pixels on all four sides. It is nested within a 'div' with a border to make it easier to see the effect of the margin.</div>
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</div>