.swusch::after {
    position: absolute;
    top: calc(100% - 0.1em);
    left: 0px;
    width: 100%;
    height: 0.35em;
    background-image: url(https://www.drivingsideways.de/fair/swusch.svg);
    background-size: 100% 100%;
}

.swusch {
    width: 130px;
    height: 0.5em;
}