iotaCSS is now a monorepo and all individual repositories are part of it. Please open issues or PRs here: https://github.com/iotacss/iotacss.
The opacity utility contains helper classes for the opacity CSS property.
npm install --save iotacss-utils-opacity
$iota-utils-opacity-namespace : 'opacity-' !default;
$iota-utils-opacity-sizes : () !default;
$iota-utils-opacity-sizes: (
30: 0.3,
60: 0.6
);
It will generate:
.u-opacity-30 {
opacity: 0.3 !important;
}
.u-opacity-60 {
opacity: 0.6 !important;
}