.icono-mail{
    goldenRectL($28);
    @extend .icono-stroke
    overflow: hidden;
    margin: $8 $3;
    &:before{
        position: absolute;
        square($25);
        @extend .icono-stroke
        transform: rotate(50deg) skew(-10deg, -20deg);
        top: -1*$20;
        left: -1*$3;

}

}