@each $breakpoint in map-keys($grid-breakpoints) {
  @include media-breakpoint-down($breakpoint) {
    $infix: breakpoint-infix($breakpoint, $grid-breakpoints);

    .d#{$infix}-d-none         { display: none !important; }
    .d#{$infix}-d-inline       { display: inline !important; }
    .d#{$infix}-d-inline-block { display: inline-block !important; }
    .d#{$infix}-d-block        { display: block !important; }
    .d#{$infix}-d-table        { display: table !important; }
    .d#{$infix}-d-table-row    { display: table-row !important; }
    .d#{$infix}-d-table-cell   { display: table-cell !important; }
    .d#{$infix}-d-flex         { display: flex !important; }
    .d#{$infix}-d-inline-flex  { display: inline-flex !important; }
  }
}