Style Placeholder Text

Snippet recomendado, darle estilo a placeholder.

::-webkit-input-placeholder {
  color: #333;
}

:-moz-placeholder {
  /* Firefox 18- */
  color: #333;
}

::-moz-placeholder {
  /* Firefox 19+ */
  color: #333;
}

:-ms-input-placeholder {
  color: #333;
}