/* footer styles */
body {
  display: flex;
  min-height: 100vh;
  flex-direction: column;
  background-image: url("BC_column.gif");
}

main {
  flex: 1 0 auto;
}

/* gallery Container styles */
.container {
    width: 95%;
}

/* gallery styles */

.row {
  display: flex;
  flex-wrap: wrap;
  padding: 0 6px;
}

.column {
  flex: 25%;
  max-width: 25%;
  padding: 0 6px;
}

.column_thirds {
  flex: 33.3%;
  max-width: 33.3%;
  padding: 0 6px;
}

.column_wide {
  flex: 100%;
  max-width: 100%;
  padding: 0 6px;
}

.column img,
.column_wide img,
.column_thirds img {
  margin-top: 12px;
  vertical-align: middle;
  width: 100%;
}

/* media queries */

@media screen and (max-width: 768px) {
  .container {
    width: 100%;
  }
  
  .column {
    flex: 50%;
    max-width: 50%;
  }
}

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