In bigcommerce you always face problem when ever you think to add some new feature or normal e-commerce feature which other e-commerce platform provide by default or you can easily get one with the help of extensions or plugin. like if you want to add cart item drop down feature in bigcommerce. Bigcommerce do not provide this feature by default. So, you need customize code by yourself. You can follow the instruction below to add cart item in drop down.
1. Go to “topMenu.html” find cart item “li” and add “%%Panel.SideCartContents%%” panel.
2. Now when you add item to cart it will display that very product in your top menu section.
3. Now you can change the design of cart drop down according to your theme.