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Demystifying the World of Web Styling: An Introduction to CSS


Is web design a field you've always wanted to venture into? Or perhaps you're a developer who wants to bolster your front-end skills? Whatever the case may be, a solid understanding of CSS—Cascading Style Sheets—is a must-have. If you're new to this world, buckle up, for we are about to embark on an exciting journey, an "Introduction to CSS."

What is CSS?

CSS, or Cascading Style Sheets, is a scripting language used for describing the look and formatting of a document written in HTML or XML. While HTML is responsible for the structure and content of a web page, CSS takes care of the page's presentation — including layout, visual effects, and background color.

CSS was first proposed by Håkon Wium Lie on October 10, 1994, and has since undergone multiple revisions, with CSS3 being the latest standard at the time of writing.

But what exactly is the purpose of CSS, and why should we care about it?

Why Use CSS?

Before CSS was introduced, adding styles to HTML documents was a tiresome task. Styling was done inline, within each HTML element, leading to redundant code and a nightmare when it came to maintaining and updating the website's look.

Enter CSS — a game-changer that brought about the separation of content from presentation. This allows for easier maintenance, greater consistency, and improved download times. Let's delve into the nuts and bolts of this intriguing language, shall we?

Core Concepts in CSS


In CSS, a selector is the part of a CSS rule set that actually selects the content you want to style. Selectors can match HTML elements, as well as an element's attributes, states, and more.


Once you've selected the HTML element you want to style, you then apply properties. These are instructions that tell browsers how to style the selected elements.


Each property is given a value. This value determines how the property will style the HTML element. For example, a color property could be given a value of 'blue', which would render the text in blue.

Basic CSS Syntax

CSS syntax consists of a set of rules. These rules have 3 parts: a selector, a property, and a value. You already learned what these terms mean in the previous section. Here is a quick example:

h1 {
color: blue;

In the example, h1 is the selector. The style property we adress is color, so the color of the h1-heading. The value of the property is blue, so the color of the heading will be blue.

CSS Box Model

All HTML elements can be considered as boxes. The CSS box model is essentially a box that wraps around every HTML element, consisting of: margins, borders, padding, and the actual content. The box model allows us to place a border around elements and space elements in relation to other elements.

CSS Layouts

Before we dive in, let's ask ourselves: What is a CSS layout? It's a technique that allows us to position elements on a page while considering other elements. CSS provides several methods for creating layouts, including flexbox, grid, and positioning.

Responsive Design with CSS

In the age of smartphones, making your website mobile-friendly is imperative. Here's where responsive web design comes in, and CSS plays a pivotal role in it. By using media queries, we can create different layouts for different screen sizes, making our website responsive.

CSS Animations

Imagine a webpage without animations—it would be like eating a plain salad without any dressing. Sure, it's edible, but it's bland. CSS animations add that necessary zing, making a webpage visually appealing. They are used to gradually change from one style to another.

CSS Preprocessors

CSS preprocessors are scripting languages that extend the default capabilities of CSS. They enable us to use logic in our CSS code, such as variables, nesting, inheritance, mixins, functions, and mathematical operations.

Frequently Asked Questions

1. What is the latest version of CSS?

At the time of writing, the latest version of CSS is CSS3.

2. Are CSS and HTML the same?

No, they serve different purposes. HTML provides the structure and content of a webpage, while CSS is used to style and layout the webpage.

3. Do I need to learn HTML before CSS?

Yes, as CSS works alongside HTML, it is beneficial to understand HTML first.

4. How do I start learning CSS?

Start with understanding the basics such as syntax, selectors, and properties, and then move onto advanced topics like the box model, layouts, and animations.

5. Can I use CSS with other languages besides HTML?

Yes, CSS can be used to style documents created in any markup language, like XML or SVG.

6. Is CSS case-sensitive?

No, CSS is not case-sensitive. However, when used with other languages, it might be.


CSS is an indispensable tool in web development, enhancing the appearance of webpages and improving user experience. As you've seen in this introduction to CSS, CSS offers a plethora of features like layouts, animations, and responsive design. So whether you're a seasoned developer or a novice coder, CSS is a language worth mastering.