HyperText Markup Language, or HTML, is used to structure web pages.
Cascading Style Sheets, or CSS, is used to style web pages. It can add color, change things like text size or font, and make a website look more pleasing overall.
JavaScript is used to add interactivity to web pages. It can be used to remove, add, and change elements when actions are preformed by the user. Example: When a button is clicked, change text content.