# what is the feature of html? HTML is a fundamental building block of the World Wide Web. It is incredibly popular for creating web pages. The main features of HTML are user-friendly, platform-independent, game development, Semantic Elements, Media support, SEO – Search Engine Optimisation, and case insensitive. # what is ip address? An Internet Protocol address (IP address) is a numerical label such as 192.0.2.1 that is assigned to a device connected to a computer network that uses the Internet Protocol for communication.