diff --git a/addons/web/static/src/scss/kanban_dashboard.scss b/addons/web/static/src/scss/kanban_dashboard.scss
index 3330be5bba6..c622858a8e7 100644
--- a/addons/web/static/src/scss/kanban_dashboard.scss
+++ b/addons/web/static/src/scss/kanban_dashboard.scss
@@ -65,9 +65,10 @@
                 }
 
                 div[class*="col-"] {
-                    flex: 1 1 percentage(100/3);
+                    flex: 1 1 percentage(1/3);
                     padding-left: $o-kanban-dashboard-dropdown-complex-gap;
                     padding-right: $o-kanban-dashboard-dropdown-complex-gap;
+                    max-width: none;
 
                     > .o_kanban_card_manage_title {
                         margin: (($font-size-base * $line-height-base) / 2) 0;