@media (max-width: 425px) {
    .mobile__header {
        background-size: 450px;
    }
}

@media (min-width: 425px) {
    .mobile__header {
        background-size: cover;
    }
}

.mobile__header {
    background-image: url("../../images/kaveh_1_1920w-ak4K7_n.jpg");
    background-repeat: no-repeat;
    height: 200px;
}