opacity
Sets the transparency level of an element. A value of 0 is fully transparent, while 1 is fully opaque.
It is documented as part of the CSS Color specification.
Syntax
/* Usage Example */
.overlay {
opacity: 0.5;
/* element becomes 50% see-through */
}
/* Global values */
opacity: inherit;
opacity: initial;
opacity: revert;
opacity: revert-layer;
opacity: unset;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.
1+
1+
2+
12+
Your first month is free
Managed WordPress hosting for faster sites.
Learn more