案例：CSS3 案例     状态：可编辑再运行    进入竖版
 运行结果　
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<html>
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<head>
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<style type="text/css">
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p.spread {word-spacing: 30px;}
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p.tight {word-spacing: -0.5em;}
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</style>
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</head>
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​
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<body>
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<p class="spread">This is some text. This is some text.</p>
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<p class="tight">This is some text. This is some text.</p>
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</body>
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</html>
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​