embedded_libs/fmt-8.1.1/doc/bootstrap/mixins/background-variant.less
browsing at commit = 6ad2062cbbe3e794b946048710366bd542cbc6c7
// Contextual backgrounds
.bg-variant(@color) {
background-color: @color;
a&:hover {
background-color: darken(@color, 10%);
}
}