.bloco-selos {
  width: 100%;
  text-align: center !important;
  font-size: 0; /* remove espaço entre inline-block */
}

.bloco-selos .selo {
  display: inline-block !important;
  width: 33.33% !important;
  margin: 0 0 40px 0 !important;
  font-size: 16px; /* volta o texto ao normal */
}

.bloco-selos .selo img {
  width: 160px !important;
  max-width: 90% !important;
  height: auto !important;
  display: inline-block !important;
}