鐵人

<div id="show">

內文.........

</div>

<style>

#show{

white-space:normal; width:550px;   

}

</style>

ps. 各家瀏覽器支援寫法！！

clear: both; /* 清除左右浮动 */ 

width: 100px; /* 必须定义宽度 */ 

word-break: break-word; /* 文本行的任意字内断开 */ 

word-wrap: break-word; /* IE */ 

white-space: -moz-pre-wrap; /* Mozilla */ 

white-space: -hp-pre-wrap; /* HP printers */ 

white-space: -o-pre-wrap; /* Opera 7 */ 

white-space: -pre-wrap; /* Opera 4-6 */ 

white-space: pre; /* CSS2 */ 

white-space: pre-wrap; /* CSS 2.1 */ 

white-space: pre-line; /* CSS 3 (and 2.1 as well, actually) */