Property Reference - CSS Reference - page 296

Name
pause-before
Values:
none | x-weak | weak | medium | strong | x-strong | <time>
Initial value:
User agent-dependent
Applies to:
All elements
Inherited:
No
Computed value:
The absolute time value
Description:
Defines the length of a pause that precedes the audio rendering of an element's content. A
pause is an interval in which no content is audibly rendered, although background sounds may
still be audible. The pause is rendered before any cue that precedes the element (see cue-be-
fore and related properties).
Examples:
h1 {pause-before: 1s;}
ul {pause-before: 250ms;}