W3C, HTML, and CSS
W3C
W3C, created in 1994, is an international community of member organizations that articulates web standards so that websites look and work the same in all web browsers. W3C stands for "World Wide Web Consortium." Their mission is to lead the Web to its full potential by developing relevant protocols and guidelines. This ensures the Web's long-term growth. So far, W3C has generated more than 90 standards, which are also called recommendations. Passing these standards required a rigorous process of review, formulation, and implementation. These standards are an integral part of every web design project.
HTML
Hypertext Markup Language (HTML) is the standard markup language for documents designed to be
displayed in a web browser. It can be assisted by CSS and Javascript for further functions.
HTML documents can be received by web browsers from local storage or from a web server.
HTML elements are the building blocks of HTML pages, which are defined by tags, written using brackets (<>).
The <html> element wraps all the content on the entire page, which is also known
as the root element. <head> element acts as a container for everything
you want to include on the HTML page that isn't the actual content you are showing to your users.
The <body> element contains all the content you want to show to web users.
CSS
Cascading Style Sheets (CSS) is a style sheet language used for describing the presentation of
a document written in a markup language such as HTML. CSS is essential within the World
Wide Web, along with HTML and Javascript. CSS is designed to enable the separation of presentation
and content, which includes layout, colors, and fonts.
The term cascading comes from the specified priority scheme to determine which style rule applies if more than one rule matches an element, making it predictable.
An example of a CSS code to change the background color is:
body {
background-color: lightblue;
}