body, html {
    height: 100%;
}

.bg-image {
    background-image: url("https://images.unsplash.com/photo-1527489377706-5bf97e608852?ixlib=rb-1.2.1&ixid=MnwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8&auto=format&fit=crop&w=1559&q=80");
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
}