The opacity()
CSS function applies transparency to the samples in the input image. Its result is a <filter-function>
.
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.
opacity(amount)
amount
<number>
or a <percentage>
. A value of 0%
is completely transparent, while a value of 100%
leaves the input unchanged. Values between 0%
and 100%
are linear multipliers on the effect. The lacuna value for interpolation is 1
.opacity(0%) /* Completely transparent */ opacity(50%) /* 50% transparent */ opacity(1) /* No effect */
<filter-function>
opacity
property
© 2005–2018 Mozilla Developer Network and individual contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/CSS/filter-function/opacity