header.top .global-event {
    background-image: url('/themes/_system/images/christmas.png');
}

h2.portal-title {
    color: #fff;
    text-shadow: 0 0 7px #000;
}

@media screen and (max-width: 764px) {
    h2.portal-title {
        color: #000;
        text-shadow: none;
    }
}

@media screen and (max-width: 500px) {
    header.top .global-event {
        background: none;
    }
}