diff --git a/kallithea/templates/files/files_history_box.html b/kallithea/templates/files/files_history_box.html
--- a/kallithea/templates/files/files_history_box.html
+++ b/kallithea/templates/files/files_history_box.html
@@ -1,4 +1,4 @@
-<div class="file_author">
+<div class="form-group">
     <div class="item">${h.literal(ungettext(u'%s author',u'%s authors',len(c.authors)) % ('<b>%s</b>' % len(c.authors))) }</div>
     %for email, user in c.authors:
       <span data-toggle="tooltip" title="${user}">
diff --git a/kallithea/templates/files/files_source.html b/kallithea/templates/files/files_source.html
--- a/kallithea/templates/files/files_source.html
+++ b/kallithea/templates/files/files_source.html
@@ -1,5 +1,5 @@
 <div id="node_history" class="clearfix">
-    <div class="pull-left">
+    <div class="form-group">
         ${h.form(h.url('files_diff_home',repo_name=c.repo_name,f_path=c.f_path),method='get')}
         ${h.hidden('diff2',c.changeset.raw_id)}
         ${h.hidden('diff1')}