#mailing_labels {
  list-style-type: none;
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-auto-rows: 1fr;
  gap: 1rem;
  margin: 1rem;
  padding: 0px;
}

#mailing_labels > * {
  padding: 0.75em;
  background-color: #EDEFF1;
  font-family: monospace;
  font-weight: 800;
  box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.25);
}

@media only screen and (max-width: 512px) {
  #mailing_labels {
    grid-template-columns: 1fr;
  }
}