@include utility('hidden') {
    display: none;

    @each $breakpoint in map-keys($breakpoints) {
        @include media('<=#{$breakpoint}') {
            @include suffix('#{$breakpoint}-lo') {
                display: none;
            }
        }

        @include media('>#{$breakpoint}') {
            @include suffix('#{$breakpoint}-hi') {
                display: none;
            }
        }
    }
}

@include utility('mt0') {
    margin-top: 0;

    @each $breakpoint in map-keys($breakpoints) {
        @include media('<=#{$breakpoint}') {
            @include suffix('#{$breakpoint}-lo') {
                margin-top: 0;
            }
        }

        @include media('>#{$breakpoint}') {
            @include suffix('#{$breakpoint}-hi') {
                margin-top: 0;
            }
        }
    }
}

@include utility('pt0') {
    padding-top: 0;

    @each $breakpoint in map-keys($breakpoints) {
        @include media('<=#{$breakpoint}') {
            @include suffix('#{$breakpoint}-lo') {
                padding-top: 0;
            }
        }

        @include media('>#{$breakpoint}') {
            @include suffix('#{$breakpoint}-hi') {
                padding-top: 0;
            }
        }
    }
}

@include utility('my-auto') {
    margin-top:    auto;
    margin-bottom: auto;
}

@include utility('db') {
    display: block;
}

@include utility('ar') {
    text-align: right;
}