.extHeadline p:after {
    content: '';
    width: 107px;
    height: 24px;
    left: 10px;
    bottom: 7px;
    background-color: red;
    position: absolute;
    opacity: 0.1;
}



@media only screen and (max-width: 1000px) {
    .extHeadline p:after {
        width: 250px;
        height: 69px;
        left: 10px;
        bottom: 31px;
    }
}