:future
:future CSS 偽類選擇器是一種時間維度偽類,它將匹配在匹配 :current 的元素之後完全出現的任何元素。例如,在透過 WebVTT 顯示字幕的影片中。
css
:future(p, span) {
display: none;
}
語法
css
:future {
/* ... */
}
示例
CSS
css
:future(p, span) {
display: none;
}
HTML
html
<video controls preload="metadata">
<source src="video.mp4" type="video/mp4" />
<source src="video.webm" type="video/webm" />
<track
label="English"
kind="subtitles"
srclang="en"
src="subtitles.vtt"
default />
</video>
WebVTT
WEBVTT FILE 1 00:00:03.500 --> 00:00:05.000 This is the first caption 2 00:00:06.000 --> 00:00:09.000 This is the second caption 3 00:00:11.000 --> 00:00:19.000 This is the third caption
規範
| 規範 |
|---|
| 選擇器 Level 4 # the-future-pseudo |
瀏覽器相容性
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