Update static/style.css

static/style.css

@@ -1,14 +1,20 @@
+html,
 body {
+    height: 100%;
     margin: 0;
     padding: 0;
+    overflow: hidden;
+}
+
+body {
     display: flex;
     flex-direction: column;
-    height: 100vh;
 }
 
 #canvas-container {
     position: relative;
     flex-grow: 1;
+    overflow: hidden;
 }
 
 #background-canvas,
@@ -28,4 +34,4 @@ body {
 
 #toolbar > * {
     margin: 0 10px;
-}
+}