body {
    margin: 0;
    padding: 0;
    background-color: black;
    color: white;
    overflow-x: hidden;
}

.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('../images/DJI_0016.jpg');
    background-size: cover;
    background-position: center;
    opacity: 0.3;
    z-index: -1;
}