How to add background image to HTML5 canvas sketchpad?

Question

I use the Responsive Sketchpad - demo and Github . What is the proper way to set the background image (instead of white background) which will fully responsive with that HTML5 canvas sketchpad?

Answer 1

.canvas{
    background-color: transparent;
    background-size: cover;
    background-image: url(https://s.ill.in.ua/i/news/630x373/397/397742.jpg);
}

worked fine for me