html, body {
    background: url('https://images.unsplash.com/photo-1449157291145-7efd050a4d0e?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=1350&q=80') no-repeat center center fixed !important;
    background-size: cover !important;
    background-repeat: no-repeat !important;
}