.form-field {
    .promptmessage {
        font-family: "PingFang SC","Helvetica Neue",Helvetica;
        display: block;
        padding: 6px 12px 16px;
        font-size: 14px;
        line-height: 20px;
        color: rgb(130,139,148);
        background-color: #f3f4f5;
    }
}