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How can I use CSS variables to maintain a consistent color theme across my website?
Asked on Jan 24, 2026
Answer
CSS variables, also known as custom properties, allow you to define reusable values, such as colors, to maintain a consistent theme across your website. You can define these variables in a central location, like the `:root` selector, and use them throughout your stylesheets.
<!-- BEGIN COPY / PASTE -->
<style>
:root {
--primary-color: #3498db;
--secondary-color: #2ecc71;
--text-color: #333;
}
body {
color: var(--text-color);
background-color: var(--primary-color);
}
.button {
background-color: var(--secondary-color);
color: #fff;
padding: 10px 20px;
border: none;
border-radius: 5px;
}
</style>
<!-- END COPY / PASTE -->Additional Comment:
- CSS variables are defined using the syntax `--variable-name: value;`.
- They are accessed using the `var(--variable-name)` function.
- Defining variables in the `:root` selector makes them available globally.
- CSS variables can be overridden in specific contexts by redefining them in a more specific selector.
- Using variables enhances maintainability and makes theme updates easier.
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