.button.product_type_variable.add_to_cart_button {
  border-radius: 15px;
}

.button.product_type_simple.add_to_cart_button {
  border-radius: 15px;
}

.wp-block-search.wp-block-search__text-button .wp-element-button {
  border-radius: 15px;
}

.woocommerce button.button.disabled {
  border-radius: 15px;
}