Shopify buy button

So the website owner wants to use shopify buy buttons for her site.
With this I am running into trouble with making a shopping cart icon in the navbar that can link to the cart. Would you guys know how to make this magic happen?

the site is theboxsock.com
any tips would be nice as the shopify people said to ask the theme writers if they have a way to do this. Maybe the person helping me was just didn’t know if it was possible?

Hello there,

I hope you are doing well today.

Shopify actually has a plugin for this, the link below will lead you to the plugin:

As it goes for adding the icon to the navigation bar you will have to customize the theme to do so because there are some change that need to be made in order for it to work. Shopify has some documentation to help with this:

I hope this helps.

Best Regards,
Support