Expired60% confidenceFactExact time
CSS Custom Properties are defined using the '--' prefix and referenced through the var() function.
2
Sources
60%
Confidence
Medium-term (~90 days)
Relevance
7/2/2026
First Seen
Valid until: 9/30/2026(expired)
Sources
Dark Mode for WeChat Mini Programs: One-Click Color Scheme Generation with Pencil MCP
bilibili苦苦菜-分享版6/18/2026
Related Claims
UnverifiedCSS custom property values can be set in JavaScript via element.style.setProperty('--precip', 8.2).73% similarUnverifiedCSS Custom Properties are natively supported by browsers at runtime, can be dynamically modified, and after modification all styles referencing the variable are immediately recalculated and applied.72% similarUnverifiedCSS custom properties (CSS variables) are a feature introduced in the CSS3 specification and received full support from mainstream browsers around 2017.65% similarUnverifiedCSS transition在设计上只支持可插值属性，display和visibility等离散属性传统上无法参与过渡59% similarUnverifiedCSS-in-JS solutions (such as styled-components and Emotion) dynamically generate style strings at runtime and inject them into style tags, and each component render may trigger style recalculation.59% similar
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