css实现强制不换行/自动换行/强制换行

<script type="text/javascript" src="http://pagead2.googlesyndication.com/pagead/show_ads.js"> </script>

强制不换行 
div{
white-space:nowrap;
}
自动换行 
div{ 
word-wrap: break-word; 
word-break: normal; 
}
强制英文单词断行 
div{
word-break:break-all;
}