.is-borderless
  border: 0 !important

table.is-completely-borderless
  td, 
  th,
  tr
    border: 0 !important

$sides: (top, bottom, left, right)
@each $side in $sides
  .is-#{$side}-borderless
    border-#{$side}: 0#{$default-unit} !important

// sizing helpers settings
$range-start: 1
$range-end: 10
$interval: 1

$current: $range-start
@while $current < $range-end
  .has-border-width-#{$current}
    border-width: #{$current}#{$default-unit} !important
  @each $side in $sides
    .has-border-#{$side}-width-#{$current} 
      border-#{$side}-width: #{$current}#{$default-unit} !important
        
  $current: $current + $interval