/* Desktop */

.modal-content {
    background-image: url('../../images/bg/581_default.jpg');
    background-size: 100% 100%;
    background-size: cover;
 }

body {
    background-image: url('../../images/bg/581_default.jpg');
    background-size: 100% 100%;
    background-attachment: fixed;
 }

/* Mobile */

@media (max-width: 768px){
.modal-content {
    background-image: url('../../images/bg/581_mobile.jpg');
    background-size: 100% 100%;
    background-size: cover;
 }

body {
    background-image: url('../../images/bg/581_mobile.jpg');
    background-size: 100% 100%;
    background-attachment: fixed;
 }