opacity
Sets the transparency level of an element. A value of 0 is fully transparent, while 1 is fully opaque.
Quick example
.overlay {
opacity: 0.5;
/* element becomes 50% see-through */
}Quick facts
Initial value
1Inherited
No
Applies to
all elements
Animation type
byComputedValueType
opacity Browser Support
Widely available Since 2015 96% global usage
This feature is well established and works across many devices and browser versions. It has been available across browsers since 2015.
Safe to use without fallbacks.
1+
1+
2+
12+