diff --git a/modoboa/extensions/amavis/static/amavis/css/quarantine.css b/modoboa/extensions/amavis/static/amavis/css/quarantine.css
index a21a82699..6302936d9 100644
--- a/modoboa/extensions/amavis/static/amavis/css/quarantine.css
+++ b/modoboa/extensions/amavis/static/amavis/css/quarantine.css
@@ -5,6 +5,7 @@
     padding-right: 15px;
     left: 0;
     right: 0;
+    z-index: 10;
 }
 
 #listing { 
diff --git a/modoboa/extensions/amavis/static/amavis/css/selfservice.css b/modoboa/extensions/amavis/static/amavis/css/selfservice.css
index bfab53b9a..393c1c090 100644
--- a/modoboa/extensions/amavis/static/amavis/css/selfservice.css
+++ b/modoboa/extensions/amavis/static/amavis/css/selfservice.css
@@ -1,5 +1,6 @@
 #menubar { 
     padding-left: 15px;
+    z-index: 10;
 }
 
 #listing { 
diff --git a/modoboa/extensions/webmail/static/webmail/css/webmail.css b/modoboa/extensions/webmail/static/webmail/css/webmail.css
index 40bb10049..891f9e2c9 100644
--- a/modoboa/extensions/webmail/static/webmail/css/webmail.css
+++ b/modoboa/extensions/webmail/static/webmail/css/webmail.css
@@ -22,6 +22,7 @@ body, html {
     right: 0;
     padding-left: 15px;
     padding-right: 15px;
+    z-index: 10;
 }
 
 #listing { 
diff --git a/modoboa/static/css/default.css b/modoboa/static/css/default.css
index d03d09f79..99ed02440 100644
--- a/modoboa/static/css/default.css
+++ b/modoboa/static/css/default.css
@@ -71,6 +71,7 @@ div#footer {
     /*display: table;*/
     width: 735px;
     margin-top: 35px;
+    z-index: 10;
 }
 
 #topmenubar a, #topmenubar a:visited {