Hello,
Add the below code instead of that one
div.product-information-inner, .product_meta>div, .product_meta>span, .product-share,
.product-content .woocommerce-variation-add-to-cart {
display:flex;
align-items: center;
justify-content: center;
text-align: center;
}
.product-info-wrapper form.cart table.variations td.label,
.product-information form.cart table.variations td.label,
.product-summary-center form.cart table.variations td.label, .product-information form.cart table.variations td.value {
text-align: center;
}
.single-product .product-information-inner a.reset_variations {
display: block;
}
Regards