Woocommerce Product Description custom CSS

SiteOrigin Support Hello:

Is anybody aware of a method by which I can reach the Woocommerce Product Description on Woocommerce (testing with Storefront Theme and/or Twenty Seventeen Theme).

I can navigate to the Woo Product Tab with SiteOrigin CSS, but not to the text field itself. Cannot click thru beyond the Tab.

I am attempting to customize the CSS of my Woocommerce Product Description text.

Thanks – GSH2000, USA