How To Use CSS Variables
CSS Variables, also known as custom properties, allow you to store values that you can reuse throughout your stylesheet. They provide a way to manage design consistency and make updates easier.
Declaring CSS Variables
CSS Variables are declared using the -- prefix and are usually defined within a :root selector to make them globally accessible.
:root { --main-bg-color: lightblue; --main-text-color: #333; }
Using CSS Variables
To use a CSS Variable, use the var() function.
body { background-color: var(--main-bg-color); color: var(--main-text-color); }
Advantages of CSS Variables
CSS Variables make it easier to maintain and update your styles. For example, changing the value of --main-bg-color will update the background color across all elements that use this variable.
Responsive Design with CSS Variables
You can also use CSS Variables in media queries to create responsive designs.
:root { --padding: 20px; } @media (max-width: 600px) { :root { --padding: 10px; } } .container { padding: var(--padding); }