The opacity()
CSS function applies transparency to the samples in the input image. Its result is a <filter-function>
.
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Note: This function is similar to the more established opacity
property. The difference is that with filters, some browsers provide hardware acceleration for better performance.
Syntax
opacity(amount)
Parameters
amount
- The amount of the conversion, specified as a
<number>
or a<percentage>
. A value of0%
is completely transparent, while a value of100%
leaves the input unchanged. Values between0%
and100%
are linear multipliers on the effect. The lacuna value for interpolation is1
.
Examples
Examples of correct values for opacity()
opacity(0%) /* Completely transparent */
opacity(50%) /* 50% transparent */
opacity(1) /* No effect */
Specifications
Specification | Status |
---|---|
Filter Effects Module Level 1The definition of 'opacity()' in that specification. | Working Draft |
See also
<filter-function>
- CSS
opacity
property blur()
brightness()
contrast()
drop-shadow()
grayscale()
hue-rotate()
invert()
saturate()
sepia()
opacity() by Mozilla Contributors is licensed under CC-BY-SA 2.5.