/deep/ input::-webkit-input-placeholder{
color:#fff;
}
/deep/ input::-moz-placeholder{ /* Mozilla Firefox 19+ */
color:#fff;
}
/deep/ input:-moz-placeholder{ /* Mozilla Firefox 4 to 18 */
color:#fff;
}
/deep/ input:-ms-input-placeholder{ /* Internet Explorer 10-11 */
color:#fff;
}
标签：moz,颜色,更改,color,deep,fff,input,placeholder From： https://www.cnblogs.com/hwy6/p/17274007.html