A CodePen by Fidel Karsto. Canvas Grid - Teaching myself HTML5 Canvas and this was the first project idea I had. Well, actually I was going to work on something else, but I wanted a grid on the canvas to help with picking out points and I did not want to paste and edit 190 line elements. So, I came up with this. For some reason though, my alpha values are not working in the fillStyle(). Anyone have any thoughts?