Unverified50% confidenceFactExact time
transition-behavior: allow-discrete是CSS Transitions Level 2提出的解决方案，允许离散属性在过渡结束的最后一帧才切换
1
Sources
50%
Confidence
Long-term
Relevance
7/11/2026
First Seen
Sources
Pure CSS Popovers: A Native Approach Without JavaScript
youtubeKevin Powell7/1/2026
Related Claims
Unverified将transition-behavior设置为allow-discrete可以允许浏览器对离散属性（如display）进行过渡处理75% 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73% similarUnverifiedThe default interpolation rule for discrete properties is to jump after 50% of the transition has elapsed, a behavior defined in the CSS specification.71% similarUnverifiedCSS规范定义离散属性在过渡中的插值行为为：动画进度0%到49.9%时保持起始值，50%时跳变为终止值；但display: none的跳变被延迟到100%71% similarUnverified@starting-style is a new at-rule introduced in the CSS Transitions Level 2 specification, used to define the initial styles of an element as it transitions from non-existence to being displayed.69% similar
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