Abakada CSS Filters Reference: Opacity Filter Effect

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Abakada: Back to Basics > Language References > CSS Properties > Filter Functions > Opacity Filter Effect

Sets the level of opacity for an input image.

{ filter: opacity( number | percentage ) }

number	Absolute positive floating-point number or a relative percentage value.

The property is read/write with a default value of 1.

The opacity( ) CSS function adjusts the degree of an element’s opaqueness, which, in effect, applies transparency to the element.

The passed parameter defines the amount of deviation from the element’s default opacity.

A value of 1 or 100% leaves the input unchanged, while a value of 0 or 0% renders the input image completely transparent or blank.

Values between 0 and 1 or between 0% and 100% have linear multipliers on the effect. Lesser values reduce opacity, or increase transparency.

Values more than 1 ( or >100% ), and negative values ( < 0 ) are ignored and render the element unchanged.

Opacity with values between 0 and 1 or between 0% and 100%.

filter: opacity(0)	filter: opacity(.25)	filter: opacity(.5)


filter: opacity(30%)	filter: opacity(60%)	filter: opacity(100%)

Opacity with a negative value or with a value more than 1 or more than 100%. Image is unchanged.

filter: opacity(-1)	filter: opacity(10)	filter: opacity(150%)

grayscale hue-rotate invert saturate sepia

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Opacity Filter Effect

Syntax:

Possible Values

Remarks:

Example

See Also