This is a shorthand property used to set the 'pause-before' and 'pause-after' properties. If two values are given, the first refers to 'pause-before' and the second to 'pause-after'. If only one value is given, it is used for both properties.
pause: 2s 3s
Explicitly sets the value of this property to that of the parent.
Sets the pause length to a time measurement (see the time units for more details)
Refers to the inverse of the value of the 'speech-rate' property. (eg: a value of 100% for 'pause-after' with a 'speech-rate' of 60 words per minute would create a pause of 1 second.)