Thank you for your reply. Could you provide an example code of how to achieve the goal using CSS?
It seems Nop Template theme has changed the way where it stores icons. Those icons are no longer in \Content\img directory. Could someone let me know how I can change the shopping cart icon? The default icon is not intuitive. It is not a shopping cart. It is a shopping bag. This is not similar to any other popular online shopping website and may confuse users.