diff --git a/viola_clean.html b/viola_clean.html
index f32b62f..c3a6a04 100644
--- a/viola_clean.html
+++ b/viola_clean.html
@@ -9,7 +9,10 @@
             body {
                 font-family: arial;
                 margin: 0;
-                padding: 0
+                overflow: hidden;
+                padding: 0;
+                min-height: 100vh;
+                background-color: #000;
             }
 
             .emscripten {
@@ -30,8 +33,8 @@
             canvas.emscripten {
                 border: 0 none;
                 background-color: #000;
-                width: 100%;
-                height: auto;
+                width: 90%;
+                height: 100vh;
             }
 
             @-webkit-keyframes rotation {