diff --git a/css/hf_base.css b/css/hf_base.css
index e45333f..0b0de67 100644
--- a/css/hf_base.css
+++ b/css/hf_base.css
@@ -377,7 +377,6 @@ fieldset legend{
 }
 
 #thumbnails{
-  margin-left:0!important ;
   margin-bottom:0;
 }
 
@@ -814,4 +813,4 @@ td .nbEntries{
       width: auto !important;
       height: auto !important;
    }
-}
\ No newline at end of file
+}
diff --git a/themeconf.inc.php b/themeconf.inc.php
index 4d7bc7e..9024608 100644
--- a/themeconf.inc.php
+++ b/themeconf.inc.php
@@ -160,12 +160,12 @@ function modus_thumbs($x, $smarty)
 	$default_params = $smarty->getTemplateVars('derivative_params');
 	$row_height = $default_params->max_height();
 	$device = get_device();
-	$container_margin = 5;
+	$container_margin = 4;
 
 	if ('mobile'==$device)
 	{
 		$horizontal_margin = floor(0.01*$row_height);
-		$container_margin = 0;
+		$container_margin = -1;
 	}
 	elseif ('tablet'==$device)
 		$horizontal_margin = floor(0.015*$row_height);