Two things require for a web app development. That is front-end and back-end development. Front-end development The Front end of a web application is a process get and display information and interact with user. Its main focus is how to design well, so that the page looks good and which helps to interact with user. The front-end uses markup language to display information. Markup Language Markup language that display text and formatting it in some order so the user can read it easily. It does not do any logic or calculation here only displaying text. Markup language have tags like keywords which can be used for formatting and we can also use any-word to form a tag and give definition for formatting. Tag always start with less-than symbol and grater-than symbol. eg: <html>,<xml>, <table>,<user>, etc... The three mainly using markup language are HTML,XML and XHTML. When we develop a web application, we mainly uses HTML, CSS a