simplify css for clear search icon

flask_admin/templates/bootstrap3/admin/model/layout.html

@@ -16,7 +16,7 @@
         <div class="pull-right">
             <button type="submit" class="btn btn-primary" style="display: none">{{ _gettext('Apply') }}</button>
             {% if active_filters %}
-            <a href="{{ clear_search_url }}" class="btn btn-link">{{ _gettext('Reset Filters') }}</a>
+            <a href="{{ clear_search_url }}" class="btn btn-default">{{ _gettext('Reset Filters') }}</a>
             {% endif %}
         </div>
 
@@ -25,7 +25,7 @@
     <div class="clearfix"></div>
 {% endmacro %}
 
-{% macro search_form(input_class="span2") %}
+{% macro search_form(input_class="col-md-2") %}
 <form method="GET" action="{{ return_url }}" class="navbar-form navbar-left" role="search">
     {% if sort_column is not none %}
     <input type="hidden" name="sort" value="{{ sort_column }}">
@@ -34,11 +34,9 @@
     <input type="hidden" name="desc" value="{{ sort_desc }}">
     {% endif %}
     {% if search %}
-    <div class="input-append form-group">
-            <input type="text" name="search" value="{{ search }}" class="{{ input_class }} form-control" placeholder="{{ _gettext('Search') }}">
-            <a href="{{ clear_search_url }}" class="clear add-on">
-                <span class="glyphicon glyphicon-remove"></span>
-            </a>
+    <div class="input-group">
+        <input type="text" name="search" value="{{ search }}" class="{{ input_class }} form-control" placeholder="{{ _gettext('Search') }}">
+        <a href="{{ clear_search_url }}" class="input-group-addon clear"><span class="glyphicon glyphicon-remove"></span></a>
     </div>
     {% else %}
     <div class="form-group">