.hero-bg {
    background-image: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.6)), url('https://images.unsplash.com/photo-1513104890138-7c749659a591?ixlib=rb-4.0.3&auto=format&fit=crop&w=1000&q=70&fm=webp');
    background-size: cover;
    background-position: center;
    background-attachment: scroll;
}