.footer-image {
  background-image:
    linear-gradient(rgba(77, 150, 168, 0.9), rgba(77, 150, 168, 0.9)), url('../assets/mobile/image-footer.jpg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

@media (min-width: 768px) {
  .footer-image {
    background-image:
      linear-gradient(rgba(77, 150, 168, 0.9), rgba(77, 150, 168, 0.9)), url('../assets/tablet/image-footer.jpg');
  }
}

@media (min-width: 1024px) {
  .footer-image {
    background-image:
      linear-gradient(rgba(77, 150, 168, 0.9), rgba(77, 150, 168, 0.9)), url('../assets/desktop/image-footer.jpg');
  }
}