style_auto_newline.css

<style type="text/css">  

.linebr {  

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) */  

}  

</style>  

<div class="linebr">CSS容器内容超出(溢出)自动换行</div>