.row {
  display: flex;
  flex-wrap: wrap;
  padding: 0 4px;
}
.column {
  flex: 25%;
  max-width: 25%;
  padding: 0 4px;
}

.column img {
  margin-top: 8px;
  vertical-align: middle;
  width: 100%;
}


@media screen and (max-width: 800px) {
  .column {
    flex: 50%;
    max-width: 50%;
  }
}

@media screen and (max-width: 600px) {
  .column {
    flex: 100%;
    max-width: 100%;
  }
}

#tribute-link {
  color: #CC0000;
  font-weight: bold;
}

#image {
  max-width: 500px;
  display: block;
}

#img-caption {
  font-size: 30px;
}

.center {
  margin: auto;
  width: 50%;
  padding: 10px;
  text-align: center;
}