diff --git a/packages/node_modules/@node-red/editor-client/src/sass/tabs.scss b/packages/node_modules/@node-red/editor-client/src/sass/tabs.scss
index 1bee6eab4..f2905a77f 100644
--- a/packages/node_modules/@node-red/editor-client/src/sass/tabs.scss
+++ b/packages/node_modules/@node-red/editor-client/src/sass/tabs.scss
@@ -16,6 +16,12 @@
  * limitations under the License.
  **/
 
+// Counter-act unscoped third-party CSS (e.g. node-red-dashboard's
+// `.red-ui-tabs { margin-bottom: 15px }`) by using a more specific selector.
+body .red-ui-tabs {
+    margin-bottom: 0;
+}
+
 .red-ui-tabs {
     position: relative;
     background: var(--red-ui-tab-background);