embedded_libs/fmt-8.1.1/doc/bootstrap/mixins/background-variant.less
browsing at commit = afd2d97c319b911a18e1c5d5d0b6388303c6b582
// Contextual backgrounds
.bg-variant(@color) {
background-color: @color;
a&:hover {
background-color: darken(@color, 10%);
}
}