backimg {
/* Location of the image */
background-image: url(/application/files/4717/4412/8777/local-energy.jpg);
    
/* Background image is centered vertically and horizontally at all times */
background-position: center center;

/* Background image doesn't tile */
background-repeat: no-repeat;

/* Background image is fixed in the viewport so that it doesn't move when
the content's height is greater than the image's height */
background-attachment: fixed;

/* This is what makes the background image rescale based
on the container's size */
background-size: cover;
    
}