diff --git a/src/layouts/partial-cards.js b/src/layouts/partial-cards.js
index 6f721d404a..bf12ff0072 100644
--- a/src/layouts/partial-cards.js
+++ b/src/layouts/partial-cards.js
@@ -42,6 +42,7 @@ class PartialCards extends EventsMixin(NavigateMixin(PolymerElement)) {
     }
 
     ha-app-layout {
+      height: 100%;
       background-color: var(--secondary-background-color, #E5E5E5);
     }