bulma/sass/helpers/flexbox.scss

$flex-direction-values: row, row-reverse, column, column-reverse;

@each $value in $flex-direction-values {
  .is-flex-direction-#{$value} {
    flex-direction: $value !important;
  }
}

$flex-wrap-values: nowrap, wrap, wrap-reverse;

@each $value in $flex-wrap-values {
  .is-flex-wrap-#{$value} {
    flex-wrap: $value !important;
  }
}

$justify-content-values: flex-start, flex-end, center, space-between, space-around, space-evenly, start, end, left, right;

@each $value in $justify-content-values {
  .is-justify-content-#{$value} {
    justify-content: $value !important;
  }
}

$align-content-values: flex-start, flex-end, center, space-between, space-around, space-evenly, stretch, start, end, baseline;

@each $value in $align-content-values {
  .is-align-content-#{$value} {
    align-content: $value !important;
  }
}

$align-items-values: stretch, flex-start, flex-end, center, baseline, start, end, self-start, self-end;

@each $value in $align-items-values {
  .is-align-items-#{$value} {
    align-items: $value !important;
  }
}

$align-self-values: auto, flex-start, flex-end, center, baseline, stretch;

@each $value in $align-self-values {
  .is-align-self-#{$value} {
    align-self: $value !important;
  }
}

$flex-operators: grow, shrink;

@each $operator in $flex-operators {
  @for $i from 0 through 5 {
    .is-flex-#{$operator}-#{$i} {
      flex-#{$operator}: $i !important;
    }
  }
}