Opacity
Control the opacity of elements.
The opacity property sets the opacity level for an element. The opacity level describes the transparency level, where 1 is not transparent at all, .5 is 50% visible, and 0 is completely transparent.
Set the opacity of an element using .opacity-{value} utilities.
100%
75%
50%
25%
0%
CSS
Sass utilities API
Opacity utilities are declared in our utilities API in scss/_utilities.scss. Learn how to use the utilities API.