//*-- piano --*\\
.icono-piano{
    width: $U28;
    height: $U22;
    @extend .icono-stroke;
    margin: $U6 $U3;
    &:before{
        position: absolute;
        left: $U4;
        top: 0;
        width: $U1;
        height: 100%;
        box-shadow: inset 0 0 0 $U32, $U5 0, $U10 0, $U15 0;
    }
    &:after{
        position: absolute;
        width: $U3;
        height: $U12;
        left: $U3;
        top: 0;
        box-shadow: inset 0 0 0 $U32, $U5 0, $U10 0, $U15 0;
    }
}