CSS

CSS (Cascading Style Sheets) is a style sheet language used for describing the presentation of a document written in a markup language like HTML or XML. It is used to control the layout, formatting, and visual appearance of a web page.

Cascading Style Sheets work by using rules that specify the style properties of HTML elements. A CSS rule consists of a selector, which identifies the HTML element to which the style should be applied, and a set of declarations that specify the style properties and values for that element.

Here is an example of a simple CSS rule:

p {
  color: red;
  font-size: 16px;
}

In this rule, the selector is “p”, which applies the styles to all <p> elements. The declarations specify that the text color should be red and the font size should be 16 pixels.

CSS can be written directly into an HTML file using the <style> tag or in a separate CSS file and linked to the HTML document using the <link> tag.

CSS has many features, including selectors for targeting specific elements, cascading and inheritance of styles, responsive design for different screen sizes, and advanced layout and animation capabilities. It is a powerful tool for designing and styling modern web pages.

You can learn CSS online on platforms like W3Schools.