=from($device)
    @media screen and (min-width: $device)
        @content

=until($device)
    @media screen and (max-width: $device - 1px)
        @content

=mobile
    @media screen and (max-width: $screen-tablet - 1px)
        @content

=tablet
    @media screen and (min-width: $screen-tablet)
        @content

=tablet-only
    @media screen and (min-width: $screen-tablet) and (max-width: $screen-desktop - 1px)
        @content

=touch
    @media screen and (max-width: $screen-desktop - 1px)
        @content

=desktop
    @media screen and (min-width: $screen-desktop)
        @content

=desktop-only
    @media screen and (min-width: $screen-desktop) and (max-width: $screen-lg - 1px)
        @content

=widescreen
    @media screen and (min-width: $screen-lg)
        @content