Property Reference - CSS Reference - page 298

Name
rest
Values:
<'rest-before'> || <'rest-after'>
Initial value:
Not defined for shorthand properties
Applies to:
All elements
Inherited:
No
Computed value:
Not specified, but likely a pair of absolute time values
Description:
A shorthand property that defines rests that precede and follow the audio rendering of an ele-
ment's content. A rest is an interval in which no content is audibly rendered, although back-
ground sounds may still be audible. See rest-before and rest-after for details on the
placement of the rests.
Examples:
th {rest: 0.5s;}
strong {rest: 333ms 250ms;}