.desconto-a-vista strong:before {
    content: "";
    background: url(https://cdn.awsli.com.br/2093/2093093/arquivos/pix.svg) center no-repeat;
    width: 28px;
    height: 21px;
    display: inline-block;
    line-height: 30px;
    margin: 0 10px 0 0;
}

.preco-parcela:before {
    content: "";
    background: url(https://cdn.awsli.com.br/2424/2424517/arquivos/credit-card-1.svg) center no-repeat;
    width: 33px;
    height: 26px;
    display: inline-block;
    line-height: 30px;
    margin: 0 10px 0 0;
}