.book-navigation .menu{border-top:1px solid #888;padding:1em 0 0 3em;}.book-navigation .page-links{border-top:1px solid #888;border-bottom:1px solid #888;text-align:center;padding:0.5em;}.book-navigation .page-previous{text-align:left;width:42%;display:block;float:left;}.book-navigation .page-up{margin:0 5%;width:4%;display:block;float:left;}.book-navigation .page-next{text-align:right;width:42%;display:block;float:right;}