For use by aural (speaking) browsers for the visually impaired, this property sets the median volume (loudness) of the voice that reads a selected element's content aloud.
Inherited: Yes
See also: Section B.87pitch, Section B.88pitch-range, Section B.92richness, Section B.105stress, Section B.122voice-family
An absolute volume between 0 and 100 (inclusive), a percentage of the inherited volume, or one of the following constants:
silent: no sound at all
x-soft: the lowest perceptible volume, the same as 0
soft: equivalent to 25
medium: equivalent to 50
loud: equivalent to 75
x-loud: the maximum comfortable volume, the same as 100
Initial value: medium
CSS Version: 2
Not supported by any currently-available browser.
This example causes aural browsers to speak elements of class ominous in a soft voice:
.ominous { volume: soft; }