.FlightFinderError {
    background-color: #ffe4e0 !important;
    color: red !important;
}

    .FlightFinderError::-webkit-input-placeholder { /* WebKit, Blink, Edge */
        color: red;
    }

    .FlightFinderError::-moz-placeholder { /* Mozilla Firefox 4 to 18 */
        color: red;
        opacity: 1;
    }

    .FlightFinderError::-moz-placeholder { /* Mozilla Firefox 19+ */
        color: red;
        opacity: 1;
    }

    .FlightFinderError::-ms-input-placeholder { /* Internet Explorer 10-11 */
        color: red;
    }