/// Add the styles for the placeholder/watermark for an input element to all
/// the different vendor prefixes at once with a single statement.
///
/// @content [The styles for the element's placeholder]
///
/// @group Utilities
@mixin placeholder {
  &::-webkit-input-placeholder {
    @content;
  }

  &::-moz-placeholder {
    @content;
  }

  &::-ms-input-placeholder {
    @content;
  }

  &::placeholder {
    @content;
  }
}