.img-row {
  display: flex;
  flex-wrap: wrap;
}

/* Create four equal columns that sits next to each other */
.img-column {
  flex: 20%;
  max-width: 20%;
  padding: 0 4px;
}

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


/* big screens */
@media screen and (min-width: 801px) {
    
    .img-column:first-child{
        padding-left: 0;
  }
    
    .img-column:last-child{
        padding-right: 0;
    }
}

/* Responsive layout - makes a two column-layout instead of four columns */
@media screen and (max-width: 800px) {
    .img-column{
        flex: 50%;
        max-width: 50%;
    }
    
    .img-column:nth-child(even){
        padding-right: 0;
    }
    
    .img-column:nth-child(odd){
        padding-left: 0;
    }
    
    .img-column:last-child{
        flex: 100%;
        max-width: 100%;
        padding: 0;
    }
}

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