argon-dashboard-react/src/assets/scss/argon-dashboard/custom/utilities/_opacity.scss

//
// Opacity
// modify the transparency of an element with this quick modifier classes
//

.opacity-1 {
    opacity: .1 !important;
}
.opacity-2 {
    opacity: .2 !important;
}
.opacity-3 {
    opacity: .3 !important;
}
.opacity-4 {
    opacity: .4 !important;
}
.opacity-5 {
    opacity: .5 !important;
}
.opacity-6 {
    opacity: .6 !important;
}
.opacity-7 {
    opacity: .7 !important;
}
.opacity-8 {
    opacity: .8 !important;
}
.opacity-8 {
    opacity: .9 !important;
}
.opacity-10 {
    opacity: 1 !important;
}