.bpp-chapter-list{list-style:decimal;padding-left:20px}
.bpp-chapter-list li{margin:6px 0}
.bpp-chapter-navigation{display:flex;justify-content:space-between;margin-top:2em;padding-top:1em;border-top:1px solid #ddd}
.bpp-chapter-navigation a{background:#f5f5f5;padding:8px 14px;border-radius:6px;text-decoration:none}
.bpp-chapter-navigation a:hover{background:#eaeaea}