/* 通用 */  ::-webkit-input-placeholder { color:#f00; }  ::-moz-placeholder { color:#f00; } /* firefox 19+ */  :-ms-input-placeholder { color:#f00; } /* ie */  input:-moz-placeholder { color:#f00; }  /* webkit專用 */  #field2::-webkit-input-placeholder { color:#00f; }  #field3::-webkit-input-placeholder { color:#090; background:lightgreen; text-transform:uppercase; }  #field4::-webkit-input-placeholder { font-style:italic; text-decoration:overline; letter-spacing:3px; color:#999; }  /* mozilla專用 */  #field2::-moz-placeholder { color:#00f; }  #field3::-moz-placeholder { color:#090; background:lightgreen; text-transform:uppercase; }  #field4::-moz-placeholder { font-style:italic; text-decoration:overline; letter-spacing:3px; color:#999; }