.ng-invalid :-moz-placeholder { /* Mozilla Firefox 4 to 18 */
    color: #ff5a00; 
    font-family: "Microsoft YaHei";
}
.ng-invalid::-moz-placeholder { /* Mozilla Firefox 19+ */
    color: #ff5a00;
    font-family: "Microsoft YaHei";
}
.ng-invalid:-ms-input-placeholder{
    color: #ff5a00;
    font-family: "Microsoft YaHei";
}
.ng-invalid::-webkit-input-placeholder {
    color: #ff5a00;
    font-family: "Microsoft YaHei";
}

.ng-pristine :-moz-placeholder { /* Mozilla Firefox 4 to 18 */
    color : #cccccc;
    font-family: "Microsoft YaHei";
}
.ng-pristine::-moz-placeholder { /* Mozilla Firefox 19+ */
    color : #cccccc;
    font-family: "Microsoft YaHei";
}
.ng-pristine:-ms-input-placeholder{
    color : #cccccc;
    font-family: "Microsoft YaHei";
}
.ng-pristine::-webkit-input-placeholder {
    color : #cccccc;
    font-family: "Microsoft YaHei";
}