#main_page {
  min-width: 360px;
}

.row {
    background: #ddd;
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    border: solid 5px white;
}

.column {
  flex-basis: 100%;
  border: none;
  padding: 5px;
}

@media screen and (min-width: 1000px) {
    .column {
      flex: 1;
    }
}

.item_title {
  font-weight: bold;
  border: 5px;
}