Sass Mixin to produce even table borders. Table borders get doubled up when a border is simply applied to a table element. This will do it in isolate.

perfectTableBorders.scss

@mixin perfectTableBorders($color, $width){
  tr{&:last-child{border-bottom: $width solid $color;}
    border-top: $width solid $color;
  }
  td{&:first-child{border-left: $width solid $color;}
    border-right: $width solid $color;
  }
}