代码示例:(标识:css3_word-wrap)
<!DOCTYPE html>
<html>
<head>
<style> 
p.test {
  width: 11em; 
  border: 1px solid #000000;
  word-wrap: break-word;
}
</style>
</head>
<body>

<h1>word-wrap 属性</h1>

<p class="test">This paragraph contains a very long word: thisisaveryveryveryveryveryverylongword. The long word will break and wrap to the next line.</p>

</body>
</html>
运行结果: