pre {
    white-space: -moz-pre-wrap; /* Mozilla, supported since 1999 */
    white-space: -pre-wrap; /* Opera */
    white-space: -o-pre-wrap; /* Opera */
    white-space: pre-wrap; /* CSS3 - Text module (Candidate Recommendation) http://www.w3.org/TR/css3-text/#white-space */
    word-wrap: break-word; /* IE 5.5+ */
}