@media screen and (max-width: 991px) {
    .vallsd{
        height: auto !important;
    }
    .seco{
        width: 300px;
        height: auto ;
    }
    .ss2{
        width: 300px;
        height: auto !important;
    }
    .swiper-wrapper{
    flex-direction: column;
}
}
.swiper-wrapper{
    display: flex;
}