::-webkit-input-placeholder {
???/* WebKit browsers */
???font-size: 12px;
???color: #cccccc;
}
:-moz-placeholder {
???/* Mozilla Firefox 4 to 18 */
???font-size: 12px;
???color: #cccccc;
}
::-moz-placeholder {
???/* Mozilla Firefox 19+ */
???font-size: 12px;
???color: #cccccc;
}
:-ms-input-placeholder {
???/* Internet Explorer 10+ */
???font-size: 12px;
???color: #cccccc;
}修改输入框placeholder文字默认颜色-webkit-input-placeholder
原文地址：http://www.cnblogs.com/dingdingSmile/p/7742611.html