.book-navigation .menu{padding-bottom:0;padding-top:1em;}.book-navigation .book-pager{margin:0;overflow:auto;padding:0.5em 0;}.book-pager li{display:inline-block;list-style-type:none;vertical-align:top;}.book-pager .previous{text-align:left;width:45%;}[dir="rtl"] .book-pager .previous{float:right;text-align:right;}.book-pager .up{text-align:center;width:8%;}.book-pager .next{float:right;text-align:right;width:45%;}[dir="rtl"] .book-pager .next{float:left;text-align:left;}