Added some comments to comply a little bit more with the cfpt rules

Caisses/GraphicalCheckout.cs

@@ -1,4 +1,13 @@
-using System;
+/*
+ * Rohmer Maxime
+ * STD Project
+ * 25/01/2023
+ * V1.0
+ * GraphicalCheckout.cs
+ * A graphical override for the checkout object
+*/
+
+using System;
 using System.Collections.Generic;
 using System.Drawing;
 using System.Linq;
@@ -13,7 +22,6 @@ namespace Caisses
         private Color _color;
         private Size _size;
         private Rectangle _area;
-        private Random Random;
 
         public Point Position { get => _position; set => _position = value; }
         public Color Color { get => _color; set => _color = value; }