.offcanvas-menu {
    background: #126daf linear-gradient(140deg, #3EA1E8 0%, #155685 50%, #022f4f 100%) !important;
    color: #fff !important;
}
#sp-main-body { 
    background-image: url(http://www.zemljabezgranica.com/images/naslovnica/2025/POZADINA_bright.jpg); 
}
div.srednji_dio {
  background-color: white;
  padding: 20px;
}