.flex-container {
  display:flex;
}
.flex-item {
  width: 150px;
  height: 110px;
}
.flex-item_v2 {
  width: 150px;
  height: 110px;
}
.flex-item_v3 {
  width: 150px;
  height: 110px;
}
.hidden {
  visibility:hidden;
  width: 150px;
  height: 110px;
}