@media screen and (max-width: 749px) {
  .product-form__input--pill input[type='radio'][data-option-name='Size' i] + label {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 3.6rem;
    min-width: 3.6rem;
    height: 3.6rem;
    padding: 0;
    border-radius: 50%;
    box-sizing: border-box;
  }
}