Root menu image question

[buddahboy]

Good Day - I have not found what I'm looking for after checking all over and require some direction please.  Attaching screen showing what I need - the cart icon and the checkout icon.  Looked in the tpl files, page source, resource library and css files but just can't find where it is.

Would appreciate some help with this one. 

TIA
Ron

[yonghan]

It is using css sprites instead of icon,you can find it here

https://github.com/abantecart/abantecart-src/tree/master/public_html/storefront/view/default_html5/image/sprite.png