SASS mixin for styling input placeholder text

input_placeholder.scss

// ----
// libsass (v3.2.5)
// ----

/// Style the placeholder attribute of input[type="text"] fields.
/// This mixin can be applied globally or on specific text fields
/// @example
/// // all input and textareas
/// @include inputPlaceholder() {
///     color: red;
///     font-weight: 300;
///     padding-top: 5px;
///  }
/// // just textareas
/// textarea {
///     @include inputPlaceholder() {
///         padding: 15px;
///     }
/// }
/// 
@mixin inputPlaceholder() {
    $selector: '';
    $prefixes: (
        moz: "::-moz",
        webkit: "::-webkit",
        ie: ":-ms"
    );
    @each $prop, $value in $prefixes {
        @if $prop != "moz" {
            $selector: #{$value}-input-placeholder;
        } @else {
            $selector: #{$value}-placeholder;
        }
        @if & {
            &#{$selector} {
                @content;
            }
        } @else {
            #{$selector} {
                @content;
            }
        }
    }
    &::placeholder {
      @content;
    }
}

@include inputPlaceholder() {
    color: red;
    font-weight: 300;
    padding-top: 5px;
}
textarea {
    @include inputPlaceholder() {
        padding: 15px;
    }
}

SassMeister-output.css

::-moz-placeholder {
  color: red;
  font-weight: 300;
  padding-top: 5px;
}

::-webkit-input-placeholder {
  color: red;
  font-weight: 300;
  padding-top: 5px;
}

:-ms-input-placeholder {
  color: red;
  font-weight: 300;
  padding-top: 5px;
}

::placeholder {
  color: red;
  font-weight: 300;
  padding-top: 5px;
}

textarea::-moz-placeholder {
  padding: 15px;
}

textarea::-webkit-input-placeholder {
  padding: 15px;
}

textarea:-ms-input-placeholder {
  padding: 15px;
}

textarea::placeholder {
  padding: 15px;
}