@media screen and (max-width:768px){
 body {background-image: url(https://omo-oss-image1.thefastimg.com//portal-saas/new2023091621051805840/cms/image/c7528055-8408-41fb-9e9d-398a7332731d.jpg);background-repeat:no-repeat;background-position:top center;height: 100vh;}

.main {
    display: none;
}
}