Mobile menu change color of header items Dawn Theme

Store Design
1

Hi

I need to change the Product page mobile expanded header menu items to be white. The expanded menu should match the homepage expanded menu (black background with white text/logo/icons.

Here is the link to the site:https://2ca11c-b0.myshopify.com/products/crew2?variant=45779220201709

Thank you

2

Hi there is no file named mobile-product.css