[DESIGN] button.

templates/pages/corpora/myGraphs.html

@@ -496,9 +496,11 @@
             <h4>
             <span class="glyphicon glyphicon-ok-circle" aria-hidden="true"></span>
             Do you want to test ?</h4>
-            <btn class="btn btn-info" onclick="goFirstGraph()">
-              <span style="font-size:120%">Compute a new graph</span> <br/> with conditional distance
-            </btn>
+            <center>
+                <btn class="btn btn-primary" onclick="goFirstGraph()">
+                  <span style="font-size:120%">Compute a new graph</span> <br/> with conditional distance
+                </btn>
+            </center>
             {% endif %}
       </ol>