diff --git a/library/ZendAfi/View/Helper/Admin/ImageViewersOptions.php b/library/ZendAfi/View/Helper/Admin/ImageViewersOptions.php
index 41a78ef3b16bdaa73b369e6f22d9fe4d322804da..44ab81908c9fe9ecd100acb6054fc935062546ed 100644
--- a/library/ZendAfi/View/Helper/Admin/ImageViewersOptions.php
+++ b/library/ZendAfi/View/Helper/Admin/ImageViewersOptions.php
@@ -99,8 +99,6 @@ class ZendAfi_View_Helper_Admin_ImageViewersOptions
       return $html;
     }
 
-    $html .= '<optgroup label="' . $groupLabel . '" style="font-style:normal;color:#FF6600">';
-
     foreach ($this->_styles[$styleKey] as $k => $v) {
       $current = (array_key_exists('style_liste', $this->_preferences)
                   && $this->_preferences['style_liste'] == $k);
diff --git a/public/opac/css/global.css b/public/opac/css/global.css
index aaf003cfca6058be016e403d53b5a6984b0953f5..1c0db0c547c9386e16aa1eb55ebff604370b3a06 100644
--- a/public/opac/css/global.css
+++ b/public/opac/css/global.css
@@ -1666,10 +1666,10 @@ body.abonne_multimedia-hold-view .actions a {
 .liste_mur.layout_fluid {
     display: block;
     column-width: 200px;
-    column-gap: 10px;
+    column-gap: 20px;
 }
 
-.liste_mur.layout_fluid article img {
+.liste_mur article img {
     max-width: 100%;
 }
 
@@ -1696,8 +1696,7 @@ body.abonne_multimedia-hold-view .actions a {
 
 .calendar .liste_mur.layout_fluid article,
 .liste_mur.layout_fluid .article_wrapper {
-    display: block;
-    width: auto;
+    width: 100%;
     margin: 0 0 10px 0;
 }