diff --git a/files/templates/files/create_file.html b/files/templates/files/create_file.html
index d44aae4..17cd60a 100644
--- a/files/templates/files/create_file.html
+++ b/files/templates/files/create_file.html
@@ -47,7 +47,7 @@
                                             <span id="helpBlock" class="help-block">{{ field.help_text }}</span>
                                         {% endif %}
                                     </div>
-                                        
+
                                     {% if field.errors %}
                                         <div class="alert alert-danger alert-dismissible clearfix" role="alert">
                                             <button type="button" class="close" data-dismiss="alert" aria-label="Close">
@@ -71,7 +71,7 @@
 
                             <div class="form-group">
                                 <div class="col-md-12">
-                                     <button type="button" class="btn btn-danger btn-raised" data-dismiss="modal">{% trans "Close" %}</button>
+                                     <button type="button" class="btn btn-default btn-raised" data-dismiss="modal">{% trans "Close" %}</button>
                                     <button class="btn btn-raised btn-primary" type="submit">{% trans 'Submit' %}</button>
                                 </div>
                             </div>
@@ -85,7 +85,7 @@
 </div>
 
 {% block script_file %}
-    
+
     {# // <script src="{% static 'js/file.js' %}"></script> #}
     <script type="text/javascript">
       $("#form-file").submit(function(event) {
diff --git a/files/templates/files/delete_file.html b/files/templates/files/delete_file.html
index e882825..bb0c8db 100644
--- a/files/templates/files/delete_file.html
+++ b/files/templates/files/delete_file.html
@@ -31,7 +31,7 @@
                             </div>
                             <div class="form-group">
                                 <div class="col-md-12">
-                                     <button type="button" class="btn btn-danger btn-raised" data-dismiss="modal">{% trans "Close" %}</button>
+                                     <button type="button" class="btn btn-default btn-raised" data-dismiss="modal">{% trans "Close" %}</button>
                                     <button class="btn btn-raised btn-primary" type="submit">{% trans 'Delete' %}</button>
                                 </div>
                             </div>
@@ -45,7 +45,7 @@
 </div>
 
 {% block script_file %}
-    
+
     {# // <script src="{% static 'js/file.js' %}"></script> #}
     <script type="text/javascript">
       $("#form-delete-file").submit(function(event) {
diff --git a/files/templates/files/update_file.html b/files/templates/files/update_file.html
index 1cc6aed..65a2859 100644
--- a/files/templates/files/update_file.html
+++ b/files/templates/files/update_file.html
@@ -52,7 +52,7 @@
                                             <span id="helpBlock" class="help-block">{{ field.help_text }}</span>
                                         {% endif %}
                                     </div>
-                                        
+
                                     {% if field.errors %}
                                         <div class="alert alert-danger alert-dismissible clearfix" role="alert">
                                             <button type="button" class="close" data-dismiss="alert" aria-label="Close">
@@ -76,7 +76,7 @@
 
                             <div class="form-group">
                                 <div class="col-md-12">
-                                     <button type="button" class="btn btn-danger btn-raised" data-dismiss="modal">{% trans "Close" %}</button>
+                                     <button type="button" class="btn btn-default btn-raised" data-dismiss="modal">{% trans "Close" %}</button>
                                     <button class="btn btn-raised btn-primary" type="submit">{% trans 'Submit' %}</button>
                                 </div>
                             </div>
@@ -90,7 +90,7 @@
 </div>
 
 {% block script_file %}
-    
+
     {# // <script src="{% static 'js/file.js' %}"></script> #}
     <script type="text/javascript">
       $("#form-update-file").submit(function(event) {
diff --git a/forum/templates/forum/forum_view.html b/forum/templates/forum/forum_view.html
index 71d2119..c331937 100644
--- a/forum/templates/forum/forum_view.html
+++ b/forum/templates/forum/forum_view.html
@@ -17,7 +17,7 @@
         {% else %}
             <li class="active">{{ forum.name }}</li>
         {% endif %}
-        
+
     </ol>
 {% endblock %}
 
@@ -33,7 +33,7 @@
             </ul>
         </div>
     </div>
-    
+
     {% if request.user|has_role:'system_admin' or request.user|has_role:'professor' and request.user in forum.topic.subject.professors.all %}
         <div class="panel panel-primary navigation">
             <div class="panel-heading">
@@ -121,7 +121,7 @@
                     </section>
                 </div>
                 <div class="modal-footer">
-                    <button type="button" class="btn btn-danger btn-raised" data-dismiss="modal">{% trans 'Close' %}</button>
+                    <button type="button" class="btn btn-default btn-raised" data-dismiss="modal">{% trans 'Close' %}</button>
                     <button type="button" onclick="$('#forum_create').submit();" class="btn btn-primary btn-raised">{% trans 'Update' %}</button>
                 </div>
             </div>
diff --git a/poll/templates/poll/create.html b/poll/templates/poll/create.html
index c55ed2d..ee216fd 100644
--- a/poll/templates/poll/create.html
+++ b/poll/templates/poll/create.html
@@ -151,7 +151,7 @@
       <div class="modal-footer">
 
         <!-- Don't remove that!!!  -->
-        <button type="button" class="btn btn-danger btn-raised" data-dismiss="modal">{% trans "Close" %}</button>
+        <button type="button" class="btn btn-default btn-raised" data-dismiss="modal">{% trans "Close" %}</button>
         {% block button_save %}
         <!-- Put curtom buttons here!!!  -->
         <button type="submite" id="button" form="form" class="btn btn-primary btn-raised">{% trans "Create" %}</button>
--
libgit2 0.21.2