.flag.show-de-premios{
    background-color: transparent;
    width: 160px;
    height: 80px;
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
    background-image: url(https://www.drogariasantamarta.com.br//arquivos/Selo_Laranja_.png);
    font-size: 0;
    right: 0;
    position: absolute;
    z-index: 9999999;
    opacity:1;
}
@media  (max-width: 440px) {
    .flag.show-de-premios{
        width: 120px;
        height: 60px;
        }
    .prateleira .flag.show-de-premios{
        width: 80px;
        height: 40px;
    }
}