Color themes with CSS variables
A css variable skin changer and css color selector template. Select the control on the left to change the color theme. It is streamlined and easy to use and can be used flexibly in web pages. Everyone is welcome to download.
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14 Jul 2025
CSS variables effectively manage styles by defining, using, dynamically updating and processing fallbacks. First, use -- to define variables in:root or specific elements, such as --primary-color:#007bff; then call them through the var() function in the style, such as background-color:var(--primary-color); then dynamically modify and change the value of the variables to achieve theme switching and other effects; finally, provide alternate styles for old browsers to ensure compatibility, such as setting background-color:#007bff as fallback.

26 Mar 2025
The other day, Florens Verschelde asked about defining dark mode styles for both a class and a media query, without repeat CSS custom properties declarations.

07 Jul 2025
CSS custom attributes improve the flexibility and maintainability of the theme system through variable forms. It starts with --, such as --primary-color, and calls through var(), supports global and local definitions, and can be dynamically modified through JavaScript. When implementing, the default theme is usually defined in:root, other theme styles are defined in the class, and topic changes are implemented by switching the class name. It is recommended to use the setTheme function to modify the body class name and combine it with local storage to remember user preferences. Notes include: compatibility issues, coverage of variable scope affecting values, increasing debugging difficulty, and avoiding excessive abstraction. The rational use of CSS variables can effectively simplify topic management, and at the same time, pay attention to details that are easily overlooked.

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Before the advent of CSS custom properties (we might call them “variables” in this article as that’s the spirit of them), implementing multiple color schemes

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Updating Placeholder Color with CSS Variables in JavascriptJavaScript lacks a direct method for modifying placeholder color. However, CSS...

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Puck is the open-source visual editor for React, empowering the next generation of page builders and no-code products. Give us a star on GitHub! ?? When integrating Puck into your page-building product, a common requirement is to allow your users

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Customizing Color Schemes with CSS VariablesIn the realm of CSS development, maintaining lengthy style sheets can be challenging, especially when...

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