fix scrolling that cut off the canvas

Author: Eaglenait

src/app/components/canvas.component.scss

@@ -7,14 +7,14 @@
 .canvas-container {
   flex: 1;
   display: flex;
-  justify-content: center;
-  align-items: center;
   background: #1a1a1a;
   padding: 20px;
   overflow: auto;
   width: 100%;
   height: 100%;
   box-sizing: border-box;
+  justify-content: left;
+  align-items: start;
 }
 
 .canvas {