Description: W3C CSS is a stylesheet language used to describe the presentation of a document written in HTML or XML. Its main function is to allow web developers to separate the content of a document from its visual presentation, thus facilitating the creation of more attractive and accessible websites. CSS allows defining styles for elements such as colors, fonts, margins, and layout on the page, providing detailed control over the appearance of documents. Additionally, CSS is a standard from the World Wide Web Consortium (W3C), ensuring its interoperability and consistency across different browsers and devices. This language has evolved over time, incorporating new features and capabilities that have expanded its use and functionality, making it an essential tool for modern web design.
History: CSS was first proposed by Håkon Wium Lie in 1994 while working at CERN. The first official specification was published by W3C in December 1996. Since then, CSS has gone through several versions, including CSS2 in 1998 and CSS3, which has been developed in modules since 1999. Each new version has introduced advanced features such as animations, transitions, and responsive design, adapting to the changing needs of web design.
Uses: CSS is primarily used in web development to style HTML and XML pages. It allows developers to define the appearance of page elements, such as layout, colors, and fonts. Additionally, CSS is essential for responsive design, enabling web pages to adapt to different screen sizes and devices. It is also used in web applications and in creating user interfaces.
Examples: A practical example of CSS is creating a styled navigation menu that changes color when hovered over. Another example is using media queries to adjust the layout of a web page on mobile devices, ensuring that the content is readable and accessible on smaller screens.
