Refactoring: vaccination

src/flask_covid19/blueprints/data_owid/templates/owid/country/all/owid_country_all_table.html

@@ -39,7 +39,7 @@
             </tr>
         {% endfor %}
         </tbody>
-        <tfoot>
+        <tfoot class="table-secondary">
             {% include 'owid/country/all/owid_country_all_table_head.html' %}
         </tfoot>
     </table>

src/flask_covid19/blueprints/data_owid/templates/owid/flat/owid_flat_table.html

                 <div class="table-responsive">
                 <table class="table table-hover table-striped table-dark">
-                    <thead>
+                    <thead class="table-secondary">
                         {% include 'owid/flat/owid_flat_table_header.html' %}
                     </thead>
                     <tbody>
@@ -68,7 +68,7 @@
                         </tr>
                     {% endfor %}
                     </tbody>
-                    <tfoot>
+                    <tfoot class="table-secondary">
                          {% include 'owid/flat/owid_flat_table_header.html' %}
                     </tfoot>
                 </table>

src/flask_covid19/blueprints/data_owid/templates/owid/imported/owid_imported_table.html

                 <div class="table-responsive">
                 <table class="table table-hover table-striped table-dark">
-                    <thead>
+                    <thead class="table-secondary">
                         {% include 'owid/imported/owid_imported_table_head.html' %}
                     </thead>
                     <tbody>
@@ -68,7 +68,7 @@
                         </tr>
                     {% endfor %}
                     </tbody>
-                    <tfoot>
+                    <tfoot class="table-secondary">
                         {% include 'owid/imported/owid_imported_table_head.html' %}
                     </tfoot>
                 </table>

src/flask_covid19/blueprints/data_owid/templates/owid/owid_data/owid_data_table.html

@@ -144,7 +144,7 @@
             </tr>
         {% endfor %}
         </tbody>
-        <tfoot>
+        <tfoot class="table-secondary">
             {% include 'owid/owid_data/owid_data_table_head.html' %}
         </tfoot>
     </table>