The roles of HTML, CSS and JavaScript, and how they relate to the front-end and back-end of web design
In web design and development HTML can be considered the skeleton of a web page, it dictates what content appears on a website to the user.
It is structured according to specific syntax that allows web browsers to execute commands hierarchically.
CSS on the other hand is the presentation layer and uses specific design elements to style structural layout established by the HTML.
JavaScript creates a way for websites to respond to users' actions, for example, making elements appear and disappear in response to a specific action.