What is CSS?


CSS, which stands for Cascading Style Sheets, is a style sheet language used to describe the visual presentation of HTML documents. It provides a powerful way to control the layout, formatting, and appearance of web pages. By separating the content and presentation layers, CSS allows web developers to create visually appealing and consistent designs across multiple web pages.

Basic Syntax and Usage

CSS uses a simple syntax that consists of selectors and declarations. Selectors target specific HTML elements, and declarations define the styling properties to be applied to those elements.

        selector {
          property: value;

For example, the following CSS code sets the color of all paragraph elements to red:

        p {
          color: red;

Common Mistakes with CSS

  • Using inline styles instead of external CSS files
  • Not following best practices for class and ID naming conventions
  • Overusing !important to override styles
  • Not considering responsive design and mobile devices
  • Not organizing CSS code or using proper comments

Frequently Asked Questions

  • Q: What is the difference between inline, internal, and external CSS?

    A: Inline CSS is applied directly to HTML elements using the style attribute. Internal CSS is defined within the HTML document using the `