/*2015.12.08*/
pre {
    /* Mozilla */
    white-space: -moz-pre-wrap;
    /* Opera 4-6 */
    white-space: -pre-wrap;
    /* Opera 7 */
    white-space: -o-pre-wrap;
    /* CSS3 */
    white-space: pre-wrap;
    /* IE 5.5+ */
    word-wrap: break-word;
}