利用 CSS 控制 DIV 块中内容强制换行。先来看下示例：
一、未加CSS控制情况：
<div style="width:30%;">
<!--数字串-->
186608752,186608932,186610076,186600607,186576340,186576338,186610806,186610424,186586705,22833794,150555535,150634343,153999301,186610076,186600607,186576340,186576338,186610806,186610424,186586705,22833794,150555535,150634343,153999301
<br/><br/>
<!--英文串-->
break-all Behaves the same as normal for Asian text, yet allows the line to break arbitrarily for non-Asian text.This value is suited to Asian text that contains some excerpts of non-Asian text.keep-all Does not allow word breaking for Chinese, Japanese, and Korean. Functions the same way as normal for all non-Asian languages. This value is optimized for text that includes small amounts of Chinese, Japanese, or Korean.
<br/><br/>
<!--中英文混排串-->
测试内容,test,content,测试内容,test,content,测试内容,test,content,测试内容,test,content,测试内容,test,content,测试内容,test,content,测试内容,test,content,测试内容,test,content,测试内容,test,content,测试内容,test,content,测试内容,test,content,测试内容,test,content,测试内容,test,content,测试内容,test,content,测试内容,test,content,测试内容,test,content,测试内容,test,content,测试内容,test,content
</div>
页面显示效果如下：
二、加CSS控制情况：
<div style="width:30%;word-wrap:break-word;overflow:hidden;">
<!--数字串-->
186608752,186608932,186610076,186600607,186576340,186576338,186610806,186610424,186586705,22833794,150555535,150634343,153999301,186610076,186600607,186576340,186576338,186610806,186610424,186586705,22833794,150555535,150634343,153999301
<br/><br/>
<!--英文串-->
break-all Behaves the same as normal for Asian text, yet allows the line to break arbitrarily for non-Asian text.This value is suited to Asian text that contains some excerpts of non-Asian text.keep-all Does not allow word breaking for Chinese, Japanese, and Korean. Functions the same way as normal for all non-Asian languages. This value is optimized for text that includes small amounts of Chinese, Japanese, or Korean.
<br/><br/>
<!--中英文混排串-->
测试内容,test,content,测试内容,test,content,测试内容,test,content,测试内容,test,content,测试内容,test,content,测试内容,test,content,测试内容,test,content,测试内容,test,content,测试内容,test,content,测试内容,test,content,测试内容,test,content,测试内容,test,content,测试内容,test,content,测试内容,test,content,测试内容,test,content,测试内容,test,content,测试内容,test,content,测试内容,test,content
</div>
显示效果如下：
CSS：
word-wrap：控制换行，当break-word时，是强制换行；
与 break-word 不同，是控制是否断词的。
overflow 属性规定当内容溢出元素框时发生的事情，当 hidden时，内容会被修剪，并且其余内容是不可见的。
