@media (max-width: 767px) {
  .single-product .wcboost-variation-swatches.age-scs-long-variation-list > select {
    display: block !important;
    width: 100%;
    max-width: 100%;
    min-height: 44px;
  }
  .single-product .wcboost-variation-swatches.age-scs-long-variation-list > .wcboost-variation-swatches__wrapper {
    display: none !important;
  }
}