#eventList {
  display: flex;
  flex-wrap: wrap;
}

.eventBlock {
  min-width: 250px;
  flex-basis: 0;
  flex-grow: 1;
  margin: 20px 20px 0 0;
}

.contentBox .eventBlock {
  margin-top: 20px;
}

.eventBlock h3 {
  margin: 0;
}

.eventBlock ul li {
  list-style: none;
  margin: 5px 0 0 0;
}