Tweak search button css

web/app/templates/corpora/analyse_corpus.html.j2

@@ -26,7 +26,7 @@
               </a>
             </span>
           </div>
-          <div class="col s12 m2 center-align" style="margin-top: 2em;">
+          <div class="col s12 m2 center-align" style="margin-top: 1.75em;">
             {{ M.render_field(query_form.submit, material_icon='send',
                               style='width:100%;') }}
           </div>