CSS voice-stress

The CSS voice-stress property is used in speech media to adjust the strength of stress emphasis.

The voice-stress property works by applying a combination of pitch change, timing changes, loudness changes, and other adjustments which can be used to increase or decrease the strength of stress emphasis.

Stress emphasis can have different meanings in different languages, so the actual meaning of the values used will depend on the language being used.

Syntax

Possible Values

normal

Specifies that the default emphasis should be used.

none

Prevents any emphasis on text that would normally be emphasized.

moderate

Specifies that moderate emphasis should be used. This is more emphasis than would normally be produced (i.e. it's more emphasis than when using the normal keyword).

strong

Specifies that strong emphasis should be used. This is more emphasis than moderate would produce.

reduced

Specifies that any emphasis should be reduced (i.e. not as much emphasis as would normally be applied).

In addition, all CSS properties also accept the following CSS-wide keyword values as the sole component of their property value:

initial

Represents the value specified as the property's initial value.

inherit

Represents the computed value of the property on the element's parent.

unset

This value acts as either inherit or initial, depending on whether the property is inherited or not. In other words, it sets all properties to their parent value if they are inheritable or to their initial value if not inheritable.

General Information

Example Code

Official Specifications

• CSS Speech Module Level 1

Browser Support

Browser support for CSS properties can vary, particularly for newer or experimental features. Check current browser compatibility before using a property in production, especially when supporting older browsers.

Initial Value

CSS properties have an initial value that applies when the property has not been explicitly set. The initial value is different from the value inherited from a parent element and may vary between properties.

Inheritance

Some CSS properties inherit their computed value from their parent element by default, while others do not. The inherit, initial, unset, and revert keywords can also be used to control how a property gets its value.

Vendor Prefixes

Most modern CSS properties use the standard, unprefixed syntax. Vendor-prefixed properties such as -webkit- are mainly relevant to older browser versions or specific features and should only be used when required by your browser support targets.