Keep background image fixed during scroll using css

Question

How do I keep the background image fixed during a page scroll? I have this CSS code, and the image is a background of the body and not

<

Answer 1

background-image: url("/your-dir/your_image.jpg");
min-height: 100%;
background-repeat: no-repeat;
background-attachment: fixed;
background-position: center;
background-size: cover;}