html,
body,
#wrapper {
  height: 100%;
  width: 100%;
  margin: 0;
  padding: 0;
  border: 0;
  background: linear-gradient(45deg, #2e4252, #738e85);
  background-attachment: fixed;
}

.row {
  display: flex;
  flex-wrap: wrap;
  padding: 0 4px;
  justify-content: center;
}

/* Create four equal columns that sits next to each other */
.column {
  flex: 25%;
  max-width: 25%;
  padding: 0 4px;
}

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

/* Responsive layout - makes a two column-layout instead of four columns */
@media screen and (max-width: 800px) {
  .column {
    flex: 50%;
    max-width: 50%;
  }
}

/* Responsive layout - makes the two columns stack on top of each other instead of next to each other */
@media screen and (max-width: 600px) {
  .column {
    flex: 100%;
    max-width: 100%;
  }
}