HTML forms the basic structure of a website. Without HTML a web browser cannot search for or display a website. HTML gives instruction to the web browser on how to display the website, by following a standard structure that contains: file type, HTML version and various element tags. CSS is used to design the look of your website. This includes background colours, font styles and basic interactivity. JavaScript is the coding that adds interactivity to your html website. HTML and CSS relate to Front-end of web design, while JavaScript is Back-end and used by web developers.