Custom Code for eCommerce [Wordpress, WooCoommerce]

Before accepting the project, I want you to have a look at: [login to view URL] on mobile. Milestone 1: You can see, that the product configurator allows 2 products to be chosen. If you tap on 2 products, the call-to-action ("Fertig") turns from black to pink and it should drop the products into cart directly. Also, please have a look at the website on desktop. Here you can see, that when 2 products are chosen and call-to-action gets clicked "Jetzt Bestellen" an overlay appears. Please make sure that this overlay will also work on mobile. Milestone 2: Please make product variations visible in cart as you can see in PDF attached.