body {
  width:80%;
  background-color:#ffffcc;
}
pre {
  background-color:#ffffff;
    /* 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;
}