body {
    background-image: url("../../images/GuitarVertical_downsampled_1920x1080_opacity32.jpg"); /* use an image whose opacity I set in photoshop */
    background-position: center; /* Center the image */
    background-repeat: repeat; /* Do not repeat the image: no-repeat */
    background-size: cover; /* Resize the background image to cover the entire container */
    background-attachment: fixed; /* should scroll with the rest of the page */
}