diff --git a/app/assets/stylesheets/buttons.scss b/app/assets/stylesheets/buttons.scss
index 1293eb494..53fe0130c 100644
--- a/app/assets/stylesheets/buttons.scss
+++ b/app/assets/stylesheets/buttons.scss
@@ -374,7 +374,11 @@ ul.dropdown-items {
   padding: 2 * $default-spacer;
 
   &.large {
-    width: 340px;
+    width: 90vw;
+
+    @media (min-width: 62em) {
+      width: 40vw;
+    }
   }
 
   ul {
diff --git a/app/components/instructeurs/column_filter_component/column_filter_component.html.haml b/app/components/instructeurs/column_filter_component/column_filter_component.html.haml
index c8b94293f..0558fce58 100644
--- a/app/components/instructeurs/column_filter_component/column_filter_component.html.haml
+++ b/app/components/instructeurs/column_filter_component/column_filter_component.html.haml
@@ -5,7 +5,7 @@
   = current_filter_tags
 
   .fr-select-group
-    = label_tag :column,  t('.column'), class: 'fr-label fr-m-0', id: 'instructeur-filter-combo-label', for: 'search-filter'
+    = label_tag :column,  t('.column'), class: 'fr-label fr-mb-1w', id: 'instructeur-filter-combo-label', for: 'search-filter'
     %react-fragment
       = render ReactComponent.new "ComboBox/SingleComboBox", **filter_react_props