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<a class="nav-item nav-link active" id="nav-toc-tab" data-toggle="tab" href="#nav-toc" role="tab" aria-controls="nav-toc" aria-selected="false">Table of Contents</a> <a class="nav-item nav-link" id="nav-about-tab" data-toggle="tab" href="#nav-about" role="tab" aria-controls="nav-about" aria-selected="true">About the Book</a> <a class="nav-item nav-link" id="nav-translated-tab" data-toggle="tab" href="#nav-translated" role="tab" aria-controls="nav-translated" aria-selected="false">Texts Translated</a> <a class="nav-item nav-link " id="nav-related-tab" data-toggle="tab" href="#nav-related" role="tab" aria-controls="nav-related" aria-selected="false">Related Content</a> <a class="nav-item nav-link" id="nav-quotes-tab" data-toggle="tab" href="#nav-quotes" role="tab" aria-controls="nav-quotes" aria-selected="false">Quotes</a>
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