diff --git a/src/style.js b/src/style.js
index 497c2ae..14ec8a7 100644
--- a/src/style.js
+++ b/src/style.js
@@ -4,6 +4,7 @@ const style = css`
   :host {
     display: flex;
     flex-direction: column;
+    height: 100%;
   }
   ha-card {
     flex-direction: column;