.levels {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-start;
}

.i326 {
  max-width: 326px;
  background: #f1f1f1;
  margin: 0 5px 15px 0;
  text-align: center;
  flex: 0 0 calc(33.33% - 5px);
}

.i326 img {
  max-width: 100%;
  height: auto;
}

figcaption {
  padding: 3px;
  text-align: center;
}

.level {
  display: block;
}

@media (max-width: 768px) {
  .i326 {
    flex: 0 0 calc(100% - 5px);
  }
}