Belajar-Sass__Trik padding.

padding_with_sass.scss

/* SCSS Code */
@mixin padding($name, $num, $unit) {
  @if $name == "bottom" or $name == "b" {
    .pb-#{$num} {
      padding-bottom: $num + $unit;
    }    
  }
  @if $name == "top" or $name == "t" {
    .pt-#{$num} {
      padding-top: $num + $unit;
    }    
  }
  @if $name == "y" {
    .py-#{$num} {
      padding: {
          top: $num + $unit;
          bottom: $num + $unit;
      }
    }    
  }
}

@include padding(top, 6, rem);
@include padding(b, 6, rem);
@include padding(y, 6, px);

/* CSS Results */
pt-6 {
  padding-top: 6rem;
}
pb-6 {
  padding-bottom: 6rem;
}
py-6 {
  padding-top: 6px;
  padding-bottom: 6px;
}