.listing-research {
  margin: 0 -0.5rem;
}

.listing-research:after {
  content: "";
  display: table;
  clear: both;
}

.research_link {
  float: left;
  width: calc(33.333% - 1rem);
  margin: 0 0.5rem 1rem;
}

.research_link:not(:hover) {
  background: hsl(0, 0%, 50%) !important;
}

@media (max-width: 768px) {
  .research_link {
    width: calc(100% - 1rem);
  }
}