Unverified60% confidenceFactTime unknown

The @supports (CSS Feature Queries) rule allows developers to detect whether a browser supports a specific CSS feature before applying the corresponding styles.

2

Sources

60%

Confidence

Long-term

Relevance

5/31/2026

First Seen

Sources

CSS text-shadow Smooth Rendering Optimization: Say Goodbye to Jagged Edges and Unlock Text Effect Potential

twittervibecoding

Related Entities

@supportsconcept CSS Feature Queriesconcept

Related Claims

UnverifiedCSS的:checked伪类早在CSS2.1规范中就已被定义，用于匹配处于选中状态的表单控件（checkbox和radio）67% similar UnverifiedUsing the CSS contain property and content-visibility can help browsers narrow the scope of reflow and repaint.67% similar

Cite This Claim

Stable URI

https://kongchang.com/claim/12231

API

curl https://kongchang.com/api/v1/knowledge/claims/12231

MCP

get_claim(id=12231)