CSS Definition

Posted by admin at April 10, 2020

CSS, or Cascading Style Sheets, is a style sheet language used to describe the way an HTML or XML document should look to a user. CSS is where you specifiy the color, size, spacing, font and other visual aspects of the content that you create in your markup language document.

Most often you will see CSS used alongside HTML to describe the way a Web page looks and feels. You can have a Web page without CSS, but it would be very difficult to make it look the way you want with just HTML. This is why almost every Web page is a combination of HTML and CSS.

CSS • /si-ɛs-ɛs/ • noun 

Stands for “Cascading Style Sheets”. A style sheet language for describing how to display an HTML document.

Sample CSS document:

body {
   background-color: #d0e4fe;
h1 {
   color: orange;
   text-align: center;
p {
   font-family: "Times New Roman";
   font-size: 20px;

HTML • /eɪʧ-ti-ɛm-ɛl/ • noun 

Stands for “HyperText Markup Language”, and it is the primary document format on the Web. It is a standardized system for tagging content on a web page so that a web browser knows how to present it properly to the viewer. It is a standardized way to describe a document’s structure and the roles of the different parts of that document. 

Sample HTML document:

<!DOCTYPE html>
<html lang="en">
        <meta charset="utf-8">
        <title>My HTML page</title>
        <p> This is an HTML document </p>

Web page • /wɛb peɪʤ/ • noun 

A hypertext document connected to the World Wide Web.

synonyms: website, home page, landing page


A global system of computer networks that connect to one another so that billions of different devices all over the world can share data. The internet is a collection of smaller networks that all combined create one large, all-inclusive global network.

World Wide Web

A collection of documents linked together by hypertext links, addressed using Uniform Resource Locators (URLs) accessible on the Internet. The World Wide Web is an application of the internet. 

abbreviated as WWW or “the Web”

Web browser • /wɛb ˈbraʊzər/ • noun 

A software application for retrieving, presenting and traversing information resources on the World Wide Web.

examples: edge, chrome, Firefox, internet explorer, safari, opera


Stands for “Hypertext Transfer Protocol”. It is a protocol managed by the W3C to dictate the manner in which Web pages share data on the World Wide Web. You might recognize this from the start of many Web addresses.


Stands for “Hypertext Transfer Protocol Secure”. It  is the secure version of HTTP, the protocol over which data is sent between your browser and the Web site that you are connected to. It means all communications between your browser and the Web site are encrypted. Some examples of sites that use HTTPS include the W3C and Microsoft Web


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