Opacity
Use opacity utilities to change elements' opacities.
Introduction
Opacity utilities are classes for setting the value of the
opacity
property.
Let’s see how they change an element’s opacity in the below gellery.
.o-emphasis
.o-main
.o-muted
.o-more-muted
.o-most-muted
<div class="o-emphasis"></div>
<div class="o-main"></div>
<div class="o-muted"></div>
<div class="o-more-muted"></div>
<div class="o-most-muted"></div>
Sass Variables
$opacity-emphasis: 1 !default
$opacity-main: 0.9 !default
$opacity-muted: 0.618 !default
$opacity-more-muted: 0.382 !default
$opacity-most-muted: 0.1 !default