TOP MARGIN implemented

Scripts/AppPreLoader.js

@@ -59,9 +59,11 @@ function loadAdvancedAlgosPlatform() {
     browserCanvas = document.getElementById('canvas');
 
     browserCanvas.width = window.innerWidth;
-    browserCanvas.height = window.innerHeight;
+    browserCanvas.height = window.innerHeight - window.TOP_MARGIN;
     browserCanvas.style.border = "none";
 
+    browserCanvas.style.top = window.TOP_MARGIN + 'px';
+
     /* The second thing to do is to send the tokenSession to the server, so that it can prepare the server side data structures needed. */
 
     let sessionToken = window.SESSION_TOKEN;