What is CSS?

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CSS (Cascading Style Sheets) is a style sheet language used to define the visual presentation of HTML documents. It allows you to control elements such as color, layout and typography, facilitating the creation of aesthetically pleasing and functional websites.

Using CSS rules, you can specify how each HTML element should be rendered in a web browser. For example, you can define text color, font size, margins, borders and much more. CSS also enables you to create responsive, adaptive layouts for different types of devices, such as desktops, tablets and smartphones.

The main advantage of CSS is its ability to separate the structure and content of a web page from its visual presentation. This means better organization of code, easier maintenance and consistency of style throughout the website.

The benefits of CSS

CSS offers significant advantages in web design, allowing centralized control over various visual aspects. By separating presentation from HTML content, it facilitates the maintenance and reuse of styles. In addition, advanced features such as animations and responsive styles enrich the user experience. Although tools such as SASS extend the capabilities of CSS, they do not entirely replace it.

CSS (Cascading Style Sheets) is crucial for stylizing and formatting web page elements. Its basic structure includes a selector, braces and property declarations.


The interaction between CSS (Cascading Style Sheets) and HTML (HyperText Markup Language) is essential for the design and presentation of web pages. While HTML is used to structure the content of a web page, CSS is used to define its visual appearance. This interaction is achieved through CSS selectors, which target HTML elements and apply specific styles to them. For example, by using CSS selectors to target the
With CSS, you can specify the color, font size and other properties of these titles in an HTML document. In this way, CSS makes it possible to separate the structure and style of an HTML document, offering greater flexibility and facilitating website maintenance.

In conclusion, the interaction between CSS and HTML represents a fundamental element in the creation of modern web pages. While HTML provides the structure and content of the page, CSS brings this structure to life, giving it an attractive and functional visual style. Thanks to this collaboration, web developers can create sites that are aesthetically pleasing, responsive and suitable for a variety of devices and browsers. The separation of concerns between HTML and CSS also facilitates site maintenance and updating, contributing to an enhanced user experience on the web.

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