An example of inline print styles.

example.less

.respond-to-print(@rules) {
    @media print {
        @rules();
    }
}

.filtered-by {
    margin: 0;

    &_filter {
        .webfont-regular();
        color: @gray;

        .respond-to-print({
            .webfont-demi();
            color: @black;
        });
    }
}