body {
    .background-image {
        position: absolute;
        top: 0;
        left: 0;
        height: 100%;
        width: 100%;
        background-image: url('../../img/bg-default.jpg'); /* Replace with your image URL */
        background-size: cover;  /* Ensures the image covers the whole screen */
        background-position: center; /* Centers the image */
        background-attachment: fixed; /* Keeps the background fixed during scrolling */
        z-index: -1;  /* Makes sure the background stays behind content */
    }
    background-size: cover;
    background-position: center;
}
      
        .banner {
    background-image: url('../../img/banner-uk.png');
}