diff --git a/packages/bigscreen/designer/AppDesigner.vue b/packages/bigscreen/designer/AppDesigner.vue
index bb83fc23..983ec699 100644
--- a/packages/bigscreen/designer/AppDesigner.vue
+++ b/packages/bigscreen/designer/AppDesigner.vue
@@ -75,4 +75,7 @@ export default {
 </script>
 
 <style lang="scss" scoped>
+.AppDesigner {
+  height: 100%;
+}
 </style>