.popust-badge {
    position: absolute;
    top: 10px;
    left: 10px;
    background-color: red;
    color: white;
    font-weight: bold;
    border-radius: 50%;
    padding: 8px 10px;
    font-size: 11px;
    z-index: 99;
    box-shadow: 0 0 5px rgba(0,0,0,0.3);
    text-transform: uppercase;
    white-space: nowrap;
}
.woocommerce div.product .popust-badge {
    top: 15px;
    left: 15px;
}