diff --git a/view/theme/redbasic/css/style.css b/view/theme/redbasic/css/style.css
index b300c5f2e..6fb1dcdb8 100644
--- a/view/theme/redbasic/css/style.css
+++ b/view/theme/redbasic/css/style.css
@@ -1654,8 +1654,8 @@ nav .dropdown-menu {
 
 main.fullscreen {
 	left: 0px;
-	width: 100%;
-	height: 100%;
+	width: 100vw;
+	height: 100vh;
 	max-width: none;
 }