body {
    /* Background image */
    background: url('../../images/back.jpg') no-repeat center center fixed;
    background-size: cover;
    position: relative;
    /* opacity: 0.9;  */
}

body::before {
    /* Create the overlay */
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6); 
    z-index: -1;
}

.container {
    /* Ensures content is visible over the background */
    position: relative;
    z-index: 1;
    color: white;
}