diff --git a/www/css/shader-style.css b/www/css/shader-style.css
index 2e87d83..9b39002 100644
--- a/www/css/shader-style.css
+++ b/www/css/shader-style.css
@@ -1,8 +1,11 @@
 .gl-canvas-bg {
+  display:block;
+  width: 100vw;
+  height: 100vh;
+
   position: fixed;
   left: 0;
   top: 0;
-  width: 100%;
-  height: 100%;
+
   z-index: -1;
 }