.header-inner {
    height: 240px;
}

.header-inner-bg-box-m {
    width: 100%;
    height: 240px;
    aspect-ratio: 64/15;
}

.yn-bannder img {
    height: 240px ;
}

@media (min-width:576px) {
    .header-inner {
        height: 350px;
    }

    .yn-bannder img {
        width: 100%;
        height: 350px;
        object-fit: cover;
    }
}