Identify an e-commerce website whose interface has some design challenges. Evaluate the three parts of the user interface (navigation, input, and output) using the six principles of interface design (layout, content awareness, aesthetics, user experience, consistency, and minimal user effort). To which principles does the interface adhere successfully? Why? In which areas does it fall short? Explain. Choose one problem you found with the interface. Which step of the interface design process should have prevented the problem? Explain.

Defend and support your opinion and cite your sources according to APA guidelines.