Jakob Nielsen, a web usability consultant and usability expert, defines usability in the website, http://www.nngroup.com/articles/usability-101-introduction-to-usability/, as follows:
"Usability is a quality attribute that assesses how easy user interfaces are to use. The word usability also refers to methods for improving ease-of-use during the design process."
In this case, web usability relates to the good functioning of a website and how easy and predictable it is for the user. We, as designers and developers, assume that for most people using a website is easy and a skill that is already considered natural, but this is not an assumption that you should make. On the contrary, when designing a website or an interface, you must assume that the user doesn't have prior experience in using them. An interface must be designed in such a way that it is intuitive and easy to use, even for a first-time user.
All elements must be visually identifiable. Elements such as...