.nivel[data-nivel="A1"] b{background:#a8dc93;color:#16211c}
.nivel[data-nivel="A2"] b{background:#6fc25a;color:#16211c}
.nivel[data-nivel="B1"] b{background:#9cc8f0;color:#16211c}
.nivel[data-nivel="B2"] b{background:#5b9be0;color:#16211c}
.nivel[data-nivel="C1"] b{background:#c6aeee;color:#16211c}
.nivel[data-nivel="C2"] b{background:#9c78dd;color:#16211c}