diff --git a/addons/web/static/src/legacy/scss/dropdown.scss b/addons/web/static/src/legacy/scss/dropdown.scss
index e3d0fadb52e..c8e18a22280 100644
--- a/addons/web/static/src/legacy/scss/dropdown.scss
+++ b/addons/web/static/src/legacy/scss/dropdown.scss
@@ -78,3 +78,36 @@
         }
     }
 }
+
+// TODO probably remove those next rules that target dropdown main classes once
+// the backend searchbar has been refactored to use OWL dropdown components and
+// to stop using the BS4 "focus" class which is not part of BS5 anymore.
+// See the commit that introduced this comment for more details.
+
+.dropdown-menu {
+    .dropdown-toggle:focus, .dropdown-item:focus {
+        background-color: transparent;
+        outline: none;
+    }
+    .dropdown-toggle.focus, .dropdown-item.focus {
+        background-color: $dropdown-link-hover-bg;
+    }
+}
+
+.dropdown-item:not(.disabled):not(:disabled) {
+    cursor: pointer;
+}
+
+button.dropdown-toggle {
+    &.active, &:hover, &:focus, &:active {
+        outline: none;
+        box-shadow: none !important;
+    }
+    &.dropdown-item {
+        &::after, &::before {
+            // Changes the placement of bootstrap dropdown carets for subdropdowns
+            @include o-position-absolute($right: 0, $top: 0);
+            transform: translate(-.6em, .6em) #{"/*rtl:translate(.6em, .6em) scaleX(-1)*/"};
+        }
+    }
+}