body {
    background-image: linear-gradient(rgba(0,0,0,0.4),rgba(0,0,0,0.4)), url("https://images.unsplash.com/photo-1531685250784-7569952593d2?q=80&w=1000&auto=format&fit=crop&ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxzZWFyY2h8N3x8d2hpdGUlMjB3YWxsfGVufDB8fDB8fHww");
    background-size: cover;
}
