caisse-bliss/assets/css/pages/responsive.scss

@media all and(max-width: 1200px) {
  #caisse-now {
    .product-box {
      width: 100%;
    }
    .product-button {
      min-width: calc(100% - 56px)
    }
  }
}

@media all and(max-width: 600px) {
  .category-listing{
    width: calc(100% - 2rem);
  }
}