换行word-wrap与word-break兼容IE和FIREFOX

word-wrap是控制换行的。
使用break-word时，是将强制换行。中文没有任何问题，英文语句也没问题。但是对于长串的英文，就不起作用。
word-break是控制是否断词的。
normal是默认情况，英文单词不被拆开。
break-all，是断开单词。在单词到边界时，下个字母自动到下一行。主要解决了长串英文的问题。
keep-all，是指Chinese, Japanese, and Korean不断词。即只用此时，不用word-wrap，中文就不会换行了。（英文语句正常。）
兼容 IE 和 FF 的换行 CSS 推荐样式
最好的方式是
word-wrap:break-word; overflow:hidden;
而不是
word-wrap:break-word; word-break:break-all;
也不是
word-wrap:break-word; overflow:auto;
在 IE 下没有任何问题，在 FF 下，长串英文会被遮住超出的内容。
word-wrap同word-break的区别
word-wrap:
normal　 Default. Content exceeds the boundaries of its container.
break-word Content wraps to next line, and a word-break occurs when necessary. 必要时会触发word-break。
word-break:
normal　 Default. Allows line breaking within words. 好像是只对Asian text起作用。
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.
测试代码如下：
1.htm===================================================================
<style>
.c1{ width:300px; border:1px solid red}
.c2{ width:300px;word-wrap:break-word; border:1px solid yellow}
.c3{ width:300px;word-wrap:break-word;word-break:break-all; border:1px solid green}
.c4{ width:300px;word-wrap:break-word;word-break:keep-all; border:1px solid blue}
.c5{ width:300px;word-break:break-all; border:1px solid black}
.c6{ width:300px;word-break:keep-all; border:1px solid red}
.c7{ width:300px;word-wrap:break-word;overflow:auto; border:1px solid yellow}
</style>
.c1{ width:300px; border:1px solid red}
<div class="c1">
safjaskflasjfklsajfklasjflksajflksjflkasjfksafj
</div>
<div class=c1>
This is all English. This is all English. This is all English.
</div>
<div class=c1>
全是中文的情况。全是中文的情况。全是中文的情况。
</div>
<div class=c1>
中英文混排的情况。Chinese and English. 中英文混排的情况。Chinese and English.
</div>
<br>
.c2{ width:300px;word-wrap:break-word; border:1px solid yellow}
<div class="c2">
safjaskflasjfklsajfklasjflksajflksjflkasjfksafj
</div>
<div class=c2>
This is all English. This is all English. This is all English.
</div>
<div class=c2>
全是中文的情况。全是中文的情况。全是中文的情况。
</div>
<div class=c2>
中英文混排的情况。Chinese and English. 中英文混排的情况。Chinese and English.
</div>
<br>
.c3{ width:300px;word-wrap:break-word;word-break:break-all; border:1px solid green}
<div class="c3">
safjaskflasjfklsajfklasjflksajflksjflkasjfksafj
</div>
<div class=c3>
This is all English. This is all English. This is all English.
</div>
<div class=c3>
全是中文的情况。全是中文的情况。全是中文的情况。
</div>
<div class=c3>
中英文混排的情况。Chinese and English. 中英文混排的情况。Chinese and English.
</div>
<br>
.c4{ width:300px;word-wrap:break-word;word-break:keep-all; border:1px solid blue}
<div class="c4">
safjaskflasjfklsajfklasjflksajflksjflkasjfksafj
</div>
<div class=c4>
This is all English. This is all English. This is all English.
</div>
<div class=c4>
全是中文的情况。全是中文的情况。全是中文的情况。
</div>
<div class=c4>
中英文混排的情况。Chinese and English. 中英文混排的情况。Chinese and English.
</div>
<br>
.c5{ width:300px;word-break:break-all; border:1px solid black}
<div class="c5">
safjaskflasjfklsajfklasjflksajflksjflkasjfksafj
</div>
<div class=c5>
This is all English. This is all English. This is all English.
</div>
<div class=c5>
全是中文的情况。全是中文的情况。全是中文的情况。
</div>
<div class=c5>
中英文混排的情况。Chinese and English. 中英文混排的情况。Chinese and English.
</div>
<br>
.c6{ width:300px;word-break:keep-all; border:1px solid red}
<div class="c6">
safjaskflasjfklsajfklasjflksajflksjflkasjfksafj
</div>
<div class=c6>
This is all English. This is all English. This is all English.
</div>
<div class=c6>
全是中文的情况。全是中文的情况。全是中文的情况。
</div>
<div class=c6>
中英文混排的情况。Chinese and English. 中英文混排的情况。Chinese and English.
</div>
<br>
.c7{ width:300px;word-wrap:break-word;overflow:auto; border:1px solid yellow}
<div class="c7">
safjaskflasjfklsajfklasjflksajflksjflkasjfksafj
</div>
<div class=c7>
This is all English. This is all English. This is all English.
</div>
<div class=c7>
全是中文的情况。全是中文的情况。全是中文的情况。
</div>
<div class=c7>
中英文混排的情况。Chinese and English. 中英文混排的情况。Chinese and English.
</div>

======================================================

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> <title>字符换行</title> <mce:style><!-- .c1{ width:300px; border:1px solid red} .c2{ width:300px;word-wrap:break-word; border:1px solid yellow} .c3{ width:300px;word-wrap:break-word;word-break:break-all; border:1px solid green} .c4{ width:300px;word-wrap:break-word;word-break:keep-all; border:1px solid blue} .c5{ width:300px;word-break:break-all; border:1px solid black} .c6{ width:300px;word-break:keep-all; border:1px solid red} .c7{ width:300px;word-wrap:break-word;overflow:auto; border:1px solid yellow} --></mce:style><style mce_bogus="1">.c1{ width:300px; border:1px solid red} .c2{ width:300px;word-wrap:break-word; border:1px solid yellow} .c3{ width:300px;word-wrap:break-word;word-break:break-all; border:1px solid green} .c4{ width:300px;word-wrap:break-word;word-break:keep-all; border:1px solid blue} .c5{ width:300px;word-break:break-all; border:1px solid black} .c6{ width:300px;word-break:keep-all; border:1px solid red} .c7{ width:300px;word-wrap:break-word;overflow:auto; border:1px solid yellow}</style> .c1{ width:300px; border:1px solid red} <div class="c1"> safjaskflasjfklsajfklasjflksajflksjflkasjfksafj </div> <div class=c1> This is all English. This is all English. This is all English. </div> <div class=c1> 全是中文的情况。全是中文的情况。全是中文的情况。 </div> <div class=c1> 中英文混排的情况。Chinese and English. 中英文混排的情况。Chinese and English. </div> <br> .c2{ width:300px;word-wrap:break-word; border:1px solid yellow} <div class="c2"> safjaskflasjfklsajfklasjflksajflksjflkasjfksafj </div> <div class=c2> This is all English. This is all English. This is all English. </div> <div class=c2> 全是中文的情况。全是中文的情况。全是中文的情况。 </div> <div class=c2> 中英文混排的情况。Chinese and English. 中英文混排的情况。Chinese and English. </div> <br> .c3{ width:300px;word-wrap:break-word;word-break:break-all; border:1px solid green} <div class="c3"> safjaskflasjfklsajfklasjflksajflksjflkasjfksafj </div> <div class=c3> This is all English. This is all English. This is all English. </div> <div class=c3> 全是中文的情况。全是中文的情况。全是中文的情况。 </div> <div class=c3> 中英文混排的情况。Chinese and English. 中英文混排的情况。Chinese and English. </div> <br> .c4{ width:300px;word-wrap:break-word;word-break:keep-all; border:1px solid blue} <div class="c4"> safjaskflasjfklsajfklasjflksajflksjflkasjfksafj </div> <div class=c4> This is all English. This is all English. This is all English. </div> <div class=c4> 全是中文的情况。全是中文的情况。全是中文的情况。 </div> <div class=c4> 中英文混排的情况。Chinese and English. 中英文混排的情况。Chinese and English. </div> <br> .c5{ width:300px;word-break:break-all; border:1px solid black} <div class="c5"> safjaskflasjfklsajfklasjflksajflksjflkasjfksafj </div> <div class=c5> This is all English. This is all English. This is all English. </div> <div class=c5> 全是中文的情况。全是中文的情况。全是中文的情况。 </div> <div class=c5> 中英文混排的情况。Chinese and English. 中英文混排的情况。Chinese and English. </div> <br> .c6{ width:300px;word-break:keep-all; border:1px solid red} <div class="c6"> safjaskflasjfklsajfklasjflksajflksjflkasjfksafj </div> <div class=c6> This is all English. This is all English. This is all English. </div> <div class=c6> 全是中文的情况。全是中文的情况。全是中文的情况。 </div> <div class=c6> 中英文混排的情况。Chinese and English. 中英文混排的情况。Chinese and English. </div> <br> .c7{ width:300px;word-wrap:break-word;overflow:auto; border:1px solid yellow} <div class="c7"> safjaskflasjfklsajfklasjflksajflksjflkasjfksafj </div> <div class=c7> This is all English. This is all English. This is all English. </div> <div class=c7> 全是中文的情况。全是中文的情况。全是中文的情况。 </div> <div class=c7> 中英文混排的情况。Chinese and English. 中英文混排的情况。Chinese and English. </div> </body> </html>