<filter-function>
Refers to the specific functions used within the 'filter' property, such as 'blur()', 'contrast()', 'sepia()', or 'drop-shadow()'.
Quick example
.special-effect {
/* Multiple filter functions combined */
filter: contrast(150%) brightness(80%) blur(2px);
}<filter-function> Browser Support
Limited availability96% global usage
This feature is not Baseline because it does not work in some of the most widely-used browsers.
Not ready for production without a fallback.
9.1+
