​x
 
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<!doctype html>
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<title>Example</title>
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<style>
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  article {
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    line-height: 0.8em;
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    counter-reset: myCounter;
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  }
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  h1 {
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    font-size: 18px;
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    }
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  h1:before {
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    content: counter(myCounter) ". ";
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    counter-increment: myCounter;
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  }
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</style>
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​
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<article>
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  <h1>Apples</h1>
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  <p>I like apples.</p>
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​
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  <h1>Oranges</h1>
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  <p>Oranges are good.</p>
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​
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  <h1>Bananas</h1>
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  <p>A perfect snack.</p>
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</article>