fixing canvas size in toucheffect demo

removed margins in demo controls

toucheffects/scripts/demo.js

@@ -56,8 +56,8 @@
 	var sizeCanvas = function () {
 		canvasElm = document.getElementById('canvas');
 
-		canvasElm.width = document.documentElement.clientWidth;
-		canvasElm.height = document.documentElement.clientHeight;
+		canvasElm.width = canvasElm.clientWidth;
+		canvasElm.height = canvasElm.clientWidth * 9 / 16;
 	};
 
 	// Create physics objects for the particles

toucheffects/styles/demo.css

@@ -57,6 +57,10 @@
     vertical-align: top;
 }
 
+	.control-group * + * {
+		margin-top: 0;
+	}
+
 #demo-controlsgripper {
     display: inline-block;
     width: 50px;
@@ -65,6 +69,7 @@
     background-repeat: no-repeat;
     background-position: center;
     cursor: pointer;
+	margin-top: 0;
 }
 
 .demo-controlsactive > #demo-controlsgripper {