Ronalds Vilciņš


CSS nesting

Over the years, CSS has grown from a simple styling language to a sophisticated tool, capable of creating intricate designs and interactions. Yet, with this expansion, came a growing need for better organization, efficiency, and code clarity. Enter CSS Nesting: a game-changing approach to writing styles that promises cleaner, more intuitive code. If you’ve ever wondered about streamlining your stylesheets, reducing repetition, or simply making your CSS more readable, then this guide is for you. Dive in as we unravel the concept of CSS nesting, its immense benefits, and the best practices to implement it seamlessly in your projects.

What is CSS nesting?

CSS nesting is a way to organize your CSS code by placing related styles inside one another. Instead of writing separate lines of code for every style, with nesting, you can group them together based on their relationship. It’s like putting clothes into drawers based on their type: socks with socks, shirts with shirts.

Why use CSS nesting?

Syntax and basics

When you’re nesting in CSS, you use the & character. It refers to the parent style, helping link related styles together.

For example, traditionally, you’d style a button and its hover state like this:

.button { background-color: blue; }
.button:hover { background-color: green; }

With nesting:

.button {
  background-color: blue;
  &:hover {
    background-color: green;

It’s clearer and more connected!

Examples and Use-Cases

CSS Nesting isn’t just for simple styles; you can use it for more advanced stuff too. Imagine you have a sidebar that needs different styles on mobile and desktop. With nesting, you can group those styles together:

.sidebar {
  width: 100%;
  @media (min-width: 768px) {
    width: 30%;

Combining with CSS variables and calc()

You can even mix nesting with other CSS tools like variables or calculations:

:root {
  --main-color: red;

.button {
  background-color: var(--main-color);
  &:hover {
    background-color: calc(var(--main-color) + #333);

Potential pitfalls and precautions

While CSS Nesting is great, overdoing it can make things confusing. If you nest too much, you might lose track of where styles start and end. Also, too much nesting can slow down how fast your website loads. So, use it wisely!

Browser Support

Most new browsers support CSS Nesting, but older ones might not. If you want to be safe, tools like Sass or LESS can help make sure your nested CSS works everywhere.

Converting xisting CSS to nested structure

If you have a lot of old CSS code and want to use nesting, there are tools and plugins that can help you change your code without starting from scratch.


CSS Nesting is a cool way to make your design code easier to read and manage. Like any tool, it’s best used with care and understanding. Give it a try, and you might just find it becomes a staple in your web design toolbox!