Style placeholder text differently from input text

placeholder.css

/* 
  article: http://blog.grahamlicence.co.uk/post/Styling-input-placeholder-CSS-to-differ-from-input.aspx
  Note, when adding these styles they must be implemented seperately as the following not work in either browsers 
  */

/* Chrome */
input::-webkit-input-placeholder {
  font-style: italic;
}

/* Firefox < 19 */
input:-moz-placeholder {
  font-style: italic;
}

/* Firefox 19 onwards */
input::-moz-placeholder {
  font-style: italic;
} 

/* IE10 */ 
input:-ms-input-placeholder {
  font-style: italic;
}