Fairness falls under the virtue category of Justice. Justice describes strengths that make life fair. They are broadly interpersonal and describe the best interaction between the individual and a group or community.
Fairness is a cognitive judgment capacity that involves reasoning and making judgments. It involves 2 types of reasoning:
Justice reasoning which emphasizes logic and weighing principles to determine moral rights and responsibilities.
Care reasoning which includes empathy and compassion; the ability to put yourself in somebody else's shoes.