完美支持IE，Firefox，Opera等浏览器。
<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,CSS容器内容超出(溢出)自动换行,CSS容器内容超出(溢出)自动换行</div