What is CSS?What is CSS?

Welcome to the world of web design, where CSS (Cascading Style Sheet) plays a pivotal role in transforming the ordinary into the extraordinary. CSS is the magic wand that adds style, color, and aesthetics to the web pages you create with HTML. It defines how your web content should appear, making it visually appealing and user-friendly. Before delving deeper into the intricacies of CSS, let's explore its fundamental concepts.


If you're new to web development and haven't explored HTML yet, we recommend starting with our Ultimate HTML Course. HTML serves as the foundation upon which CSS builds, and having a solid grasp of HTML will enhance your CSS journey.

Defining CSS

CSS, short for Cascading Style Sheets, is a styling language used to define document presentation in HTML (Hypertext Markup Language). But what does that mean?

Think of HTML as the foundation of a house – it provides the essential structure and layout for your web page. Now, imagine CSS as the interior designer of that house. It's responsible for adding styles, colors, and aesthetics to the structure, making it inviting and visually captivating.

Take a look at this illustration:


On the left side, you see plain HTML, which provides the basic structure. On the right side, it's the same HTML with CSS applied, transforming it into something visually appealing.

Understanding CSS Syntax

CSS might initially seem like a foreign language, but it follows a simple syntax. A CSS rule consists of two parts: a selector and a declaration block. The selector tells us which HTML element(s) the rule applies to, while the declaration block contains one or more property-value pairs that define the styling.

Let's break it down with an example:

  • The p is the selector, indicating that this rule applies to all <p> elements.
  • color: purple; specifies that the text color should be purple.
  • background-color: green; specifies that the background color should be green.

We'll delve deeper into selectors, properties, and values in later chapters, but for now, remember that CSS allows us to select elements and apply styles inside the curly braces {}.

What's Next?

In the upcoming chapters, we'll delve into CSS selectors, properties, values, and much more. By the end of this course, you'll have the skills to transform plain HTML into captivating web pages that engage and inspire.


What do we need CSS for?

Select the correct answer

Everything was clear?

Section 1. Chapter 1