Revert ":wrench: Add a class to encapsulate body"

This reverts commit 8e87c315b697aa0b540a4d9651942e35b240e083.

src/templates/main.html

@@ -117,9 +117,7 @@ $if(toc)$
             $^$$table-of-contents$
             </nav>
 $endif$
-            <div class="generated-body">
             $^$$body$
-            </div>
 $if(list)$
             <div class="card-columns">
                     $^$${ list:card() }