$space-map: (
  0: $space-0,
  1: $space-1,
  2: $space-2,
  3: $space-3,
  4: $space-4
);

@each $space-key, $space-prop in (m: margin, p: padding) {

  @each $i, $space-var in $space-map {
    .#{$space-key}-#{$i} { #{$space-prop}: $space-var !important; }
    .#{$space-key}t-#{$i} { #{$space-prop}-top: $space-var !important; }
    .#{$space-key}b-#{$i} { #{$space-prop}-bottom: $space-var !important; }
    .#{$space-key}l-#{$i} { #{$space-prop}-left: $space-var !important; }
    .#{$space-key}r-#{$i} { #{$space-prop}-right: $space-var !important; }
    .#{$space-key}x-#{$i} {
      #{$space-prop}-left: $space-var !important;
      #{$space-prop}-right: $space-var !important;
    }
    .#{$space-key}y-#{$i} {
      #{$space-prop}-top: $space-var !important;
      #{$space-prop}-bottom: $space-var !important;
    }
  }

  @if $space-prop == margin {
    .#{$space-key}l-auto { #{$space-prop}-left: auto !important; }
    .#{$space-key}r-auto { #{$space-prop}-right: auto !important; }
    .#{$space-key}x-auto {
      #{$space-prop}-left: auto !important;
      #{$space-prop}-right: auto !important;
    }
  }

  @each $screen-name, $screen-width in $screen-max-widths {
    @include more-than( $screen-name ) {
      @each $i, $space-var in $space-map {
        .#{$space-key}-#{$screen-name}-#{$i} { #{$space-prop}: $space-var !important; }
        .#{$space-key}t-#{$screen-name}-#{$i} { #{$space-prop}-top: $space-var !important; }
        .#{$space-key}b-#{$screen-name}-#{$i} { #{$space-prop}-bottom: $space-var !important; }
        .#{$space-key}l-#{$screen-name}-#{$i} { #{$space-prop}-left: $space-var !important; }
        .#{$space-key}r-#{$screen-name}-#{$i} { #{$space-prop}-right: $space-var !important; }
        .#{$space-key}x-#{$screen-name}-#{$i} {
          #{$space-prop}-left: $space-var !important;
          #{$space-prop}-right: $space-var !important;
        }
        .#{$space-key}y-#{$screen-name}-#{$i} {
          #{$space-prop}-top: $space-var !important;
          #{$space-prop}-bottom: $space-var !important;
        }
      }

      @if $space-prop == margin {
        .#{$space-key}l-#{$screen-name}-auto { #{$space-prop}-left: auto !important; }
        .#{$space-key}r-#{$screen-name}-auto { #{$space-prop}-right: auto !important; }
        .#{$space-key}x-#{$screen-name}-auto {
          #{$space-prop}-left: auto !important;
          #{$space-prop}-right: auto !important;
        }
      }
    }
  }
}