+add-selector('alert', '', 'color-background-muted') {
  _.current_selector = 'alert'

  padding: $Sizes.padding.large
  border-radius: $Sizes.round.small
  display: block
  width: 100%
  font-weight: bold;

  for $color-name, $color-value in $Colors.all {
    add-value($color-name, 'color-background-' + $color-name)
  }
}