.js-store-prod-all-text {
  font-size: 18px !important;
}

.t-store__tabs__content.t-descr.t-descr_xxs {
  font-size: 18px !important;
}

.t-store__tabs__item-title.t-name.t-name_xs {
    font-size: 18px;
}

@media screen and (max-width: 640px) {
  .js-store-prod-all-text {
     font-size: 16px !important;
  }
  
  .t-store__tabs__content.t-descr.t-descr_xxs {
    font-size: 16px !important;
  }
  
  .t-store__tabs__item-title.t-name.t-name_xs {
    font-size: 18px;
  }
}