1. HTML is the carrier of Web content . The content is the information that the Web creator puts on the page to let the user browse, can contain text, picture, video and so on.
2. CSS style is performance . Just like a web coat. For example, the title font, color changes, or for the title to add background pictures, borders and so on. All these things that change the appearance of the content are called performance.
3. JavaScript is used to achieve special effects on Web pages . such as: Mouse over Popup drop-down menu. or the mouse slide over the background color of the table changes. There is also the rotation of the Focus news (news pictures). It can be understood that there are animations and interactions that are generally done with JavaScript.
Learning the basics of Web front-end development requires mastery: HTML, CSS, JavaScript language