small changes

index.html

@@ -1080,6 +1080,9 @@
     <div class="modal-dialog sm">
         <div class="modal-content">
             <div class="modal-body">
+                <button type="button" class="close" data-dismiss="modal" aria-label="Close">
+                  <span aria-hidden="true">&times;</span>
+                </button>
                 <p id="warningMessage">
                 </p>
             </div>
@@ -1229,7 +1232,6 @@
                     Color (rgb hex) : &nbsp;&nbsp;<input id="backgroundColor" value="" placeholder="" class="hexVal form-control" type="text">
                 </p>
             </div>
-            </div>
         </div><!-- /.modal-content -->
     </div><!-- /.modal-dialog -->
 </div><!-- /.modal -->