$red: tomato; $blue: lightblue; $black: #333; $white: fff;

.bg-black {

background: $black;

}

.bg-red {

background: $red;

}

.bg-blue {

background: $blue;

}

.bg-white {

background: $white;

}

.text-black {

color: $black;

}

.text-red {

color: $red;

}

.text-blue {

color: $blue;

}

.text-white {

color: $white;

}