@media (max-width: 767px){

    .b612-listing{

        margin:70px auto;

        padding:0 20px;

    }

    .b612-listing-grid{

        grid-template-columns:1fr;

        gap:18px;

    }

    .b612-book-row{

        grid-template-columns:1fr;

        text-align:center;

    }

    .b612-book-row-cover{

        margin:auto;

    }

    .b612-book-row-button{

        justify-self:center;

        margin-top:20px;

    }

}