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  |   
 |  @mixin fn($space,$direction,$size,$n) { 
 |      @if $n { 
 |          #{$space}-#{$direction}: #{$size*$uni-space-root}px 
 |      } @else { 
 |           #{$space}-#{$direction}: #{-$size*$uni-space-root}px 
 |      } 
 |  } 
 |  @mixin get-styles($direction,$i,$space,$n){ 
 |      @if $direction == t { 
 |          @include fn($space, top,$i,$n); 
 |      }  
 |      @if $direction == r { 
 |          @include fn($space, right,$i,$n); 
 |      }  
 |      @if $direction == b { 
 |          @include fn($space, bottom,$i,$n); 
 |      }  
 |      @if $direction == l { 
 |       @include fn($space, left,$i,$n); 
 |      }  
 |      @if $direction == x { 
 |          @include fn($space, left,$i,$n); 
 |          @include fn($space, right,$i,$n); 
 |      }  
 |      @if $direction == y { 
 |          @include fn($space, top,$i,$n); 
 |          @include fn($space, bottom,$i,$n); 
 |      }  
 |      @if $direction == a { 
 |          @if $n { 
 |              #{$space}:#{$i*$uni-space-root}px; 
 |          } @else { 
 |              #{$space}:#{-$i*$uni-space-root}px; 
 |          } 
 |      }  
 |  } 
 |    
 |  @each $orientation in m,p { 
 |      $space: margin; 
 |      @if $orientation == m { 
 |          $space: margin; 
 |      } @else { 
 |          $space: padding; 
 |      } 
 |      @for $i from 0 through 16 { 
 |          @each $direction in t, r, b, l, x, y, a { 
 |              .uni-#{$orientation}#{$direction}-#{$i} {  
 |                  @include  get-styles($direction,$i,$space,true); 
 |              }  
 |              .uni-#{$orientation}#{$direction}-n#{$i} {  
 |                  @include  get-styles($direction,$i,$space,false); 
 |              } 
 |          } 
 |      } 
 |  } 
 |  
  |