placeholders(c-color)
  &::-webkit-input-placeholder
    color rgba(c-color, 0.3)
  :focus::-webkit-input-placeholder
    color c-color

  &::-moz-placeholder
    color rgba(c-color, 0.3)
  :focus::-moz-placeholder
    color c-color

  &:-ms-input-placeholder
    color rgba(c-color, 0.3)
  :focus:-ms-input-placeholder
    color c-color

placeholders(c-teal)