csv-library-website/library/templates/menu.html

{% block menu %}
<a href="/"><button>All books</button></a>
<a href="/upload"><button>Upload</button></a>
<div class="dropdown">
  <button class="dropbtn">Type</button>
   <div class="dropdown-content">
     {% for pubtype in pubtypes %}
     	<button type="button" name="button" onclick="filterSelection('{{ pubtype }}')" >{{ pubtype.title() }}</button>
     {% endfor %}
   </div>
 </div>
 <div class="dropdown">
   <button class="dropbtn">Year</button>
    <div class="dropdown-content">
      {% for pubyear in pubyears %}
      	<button type="button" name="button" onclick="filterSelection('{{ pubyear }}')" >{{ pubyear }}</button>
      {% endfor %}
    </div>
  </div>
{% endblock menu %}