diff --git a/wwwroot/center.ui b/wwwroot/center.ui
new file mode 100644
index 0000000..d17765d
--- /dev/null
+++ b/wwwroot/center.ui
@@ -0,0 +1,6 @@
+{
+	"widgettype":"VBox",
+	"options":{
+		"height":"100%"
+	}
+}