CSS Custom Properties (CSS Variables) Examples

CSS Custom Properties (occasionally referred to as ‘CSS variables’) are now supported by all contemporary browsers and used in production. This is excellent, but they are distinct from parameters in preprocessors, and I’ve already seen several instances of individuals utilizing them without contemplating the benefits. Custom attributes can fundamentally alter how we create and arrange CSS and, to a lesser extent, the way we interact with UI components using JavaScript. I’m not going to detail the syntax and operation of custom properties (for that, I recommend reading “It’s Time To Start Using Custom Properties”). 

Field Animations with CSS Custom Properties

Custom Properties are similar to variables of preprocessors but have several critical distinctions. The first and most noticeable distinction is in the syntax. You can build some code to cause an item to bounce up and down, and then to increase the amount of bounce it produces when we hover over it. It is free and open source to use for your next projects.


Slack Theming with CSS Custom Properties

By default, CSS markup is somewhat repetitious. For instance, if you have chosen a colour scheme for the website, you will often utilise declarations for the same five or six colours throughout the design. This also implies that if you choose to alter your colour scheme or simply a single hue, you must locate and replace every instance of it. While code editors made this relatively simple, CSS variables provide an even better solution.


CSS Custom Properties Example

Additionally, custom attributes are incredibly versatile and have many additional practical applications, as we shall see later. Additionally, they are compatible with JavaScript.


Theming a Site with CSS Custom Properties

Custom properties, sometimes called CSS variables, are specified by a developer and may be reused across a web application or page. CSS variables are often set using the property notation. It is free and open source to use for your projects.


CSS Custom Properties and Shadow DOM

CSS custom properties are now supported in React apps, providing additional opportunities for React developers. You can accomplish a lot of things using CSS variables that are not feasible with JavaScript. We could do more with variables using CSS variables, and rather than altering them, we can change their values.


CSS Custom Properties on Elements

Custom properties in CSS enable you to store and retrieve values from properties that you specify. They are defined and used in the same way as other CSS properties, which means they may be limited and used at many levels while adhering to conventional CSS cascading and specificity requirements.


CSS Custom Properties on Stylus

Numerous online programmes use a substantial amount of CSS, which frequently contains repeated values. For instance, if a colour is used multiple times in several components, a global search and replace operation is performed to alter the colour. This may be time-consuming and somewhat intimidating.


CSS Custom Properties and Media Queries

Custom properties, sometimes called CSS variables, are specified by a developer and may be reused across a web application or page. CSS variables are often set using the property notation. It is free and open source to use for your next projects.


CSS Custom Properties and SASS Variables

Developers may use custom properties to store data in a single file or reference them in several components. Additionally, custom properties provide semantic identifiers; for example, —main-button colour is more understandable than #99efbe when used across many parts. Besides, it’s critical to remember that custom properties are subject to CSS cascading rules.


CSS Variable with Shadow Lists

Custom properties, which are frequently referred to as CSS variables (even though both notions exist theoretically), are established by CSS writers that hold particular values that may be reused across a document. They are somewhat equivalent to their JavaScript counterparts but, in my view, far superior to those supplied by CSS preprocessors such as SASS.


Playing with CSS Variables

Custom properties (a.k.a. CSS variables) enable us to save and reuse property values across our stylesheets. If you’re unfamiliar with them, you may question when you should use them in addition to preprocessor variables (if indeed you use a preprocessor).


Dark Mode with CSS Variables

Although the support of CSS custom properties is still in its infancy, and some browsers only support them via flags that must be enabled or set to true in advance, support is projected to grow significantly in the following years, so it’s critical to understand how to utilise and use them.


Fit Text with CSS Variables

One of the primary benefits of CSS pre/postprocessors is that they enable values to be saved in a keyword and scoped to a particular selector if necessary. A proposal to interpret native variables for CSS is created in response to a long-standing request from developers. These are technically known as CSS custom properties but are sometimes alluded to as CSS variables on occasion.


Random Bubble Scene Using Variable Scope

CSS writers can use custom properties to construct cascading CSS variables that are accepted for all CSS properties. CSS variables could be used independently of custom elements to prevent dispersing style data across a stylesheet. The author of a CSS stylesheet sets values to a custom property and then uses the var() method to reuse those values across the stylesheet.


SVG Animation with Speech Recognition

CSS Variables, technically referred to in the specification as CSS Custom Properties, was a feature on wish lists long before it became a standard. CSS Variables were a standard for almost a decade and are supported by all contemporary browsers.


Sizing Areas with Custom Properties

One of the several difficulties inherent in developing CSS is selecting the appropriate unit. There have been several debates throughout the years about whether to use px, em, or rem to size text. You should prefer relative units over pixels. It is one of the best properties to use for your projects.


Using Locally Scoped Custom Properties

We may style individual components by utilising locally scoped attributes. The title of this section, as well as the h2s that follow, have the class. Title. Because styling them with locally scoped properties, You don’t even need to pick them; all Ineed to do is select the parent and modify the property’s value. They do not need to be defined globally, as they are not global characteristics. For instance, the —button-scale property does not require an international definition because it is only used within my buttons. Working in this manner may help keep things tidy and orderly while also making it extremely simple to make changes without getting into specification battles or needing to go crazy with additional classes to make tiny changes.


CSS Theme Switcher

A user may click or press a button to switch the site’s colours from dark text on a light background to light text on a dark backdrop. Subtle adjustments, such as changing the highlight colour, may also be made to maintain a suitable contrast with the environment.


Custom Cursor with CSS Variables

Custom cursor using CSS variables and a snap motion concentrates on the element you are presently hovering over. All developers should make use of this functionality since it can significantly save coding and maintenance time. In this lesson, I’ll cover the fundamentals of CSS Variables syntax and then discuss some of the finer details of utilising CSS Variables (or custom properties) with some practical use cases.


Duotone Filtering with CSS Variables

 It would be cool to have a convenient choice wheel for experimenting with various filters. Therefore, here it is! A tester for duotone filtering that makes use of CSS variables. The inner ring is lighter in hue, while the outside ring is darker. To alter the colours, modify the pug code’s colours variable.


Card UI Skeleton Screen

This generates a card component’s skeleton by utilising CSS custom attributes to draw various gradients on the backdrop picture. Skeleton displays could be used to enhance the apparent performance of a computer while it is loading.



Custom CSS properties enable users to design layouts as well as alter CSS values and variables within apps. Although CSS variables are in their experimental stage, they may be utilized as APIs and manipulate JavaScript states. Custom variables are made easy to use in React applications by libraries such as React Custom Properties. You can use above mentioned CSS custom properties to use in your projects.

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