.error {color: #FF00;}
.flex-container {
  display: flex;
  flex-flow: row wrap;
  /* Then we define how is distributed the remaining space */
  justify-content: space-around;
  
  padding: 0;
  margin: 0;
  list-style: none;
}

.flex-item {
  background: #eee;
  padding: 5px;
  width: 600px;
  height: 400x;
  margin-top: 10px;
  line-height: default;
  color: darkslategrey;
  font-weight: bold;
  font-size: 1em;
  text-align: center;}
  .flex-item p{font-size: 11px;color: #0E0C0C;}