Background image doesn't fit in the screen width

Question

I've set my background image (1280 x 853) and that doesn't suit well the screen.

How can I fix that?

body {
  background-image: url("/assets/pic.jpg");
}

Answer 1

body {
    background-image:  url("/assets/pic.jpg");
    background-size:   cover;   
    background-repeat: no-repeat;
}