source/misc/embedded_libs/fmt-8.1.1/doc/bootstrap/mixins/background-variant.less
browsing at commit = 43e3097e24cd2178dcb3f5bba2e37691d364ac6e
// Contextual backgrounds
.bg-variant(@color) {
background-color: @color;
a&:hover {
background-color: darken(@color, 10%);
}
}