.ausverkauft{
    position: absolute;
    background: rgb(255,0,0,0.8);
    padding: 3px;
    color: #FFF;
    transform: rotate(344deg);
    font-weight: 700;
    text-transform: uppercase;
    box-shadow: 2px 4px 5px #000;
}

.footer{
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: #FFF;
    box-shadow: 2px 4px 5px #000;
    box-shadow: 0px -25px 50px rgb(0,0,0,0.1);
}

.gelb {
    background-color: yellow;
  }