css flex row and column code example

Example 1: use flex in container with multiple components

.wrap {
  display: flex;
  flex-wrap: wrap;
  flex-direction: column;         /* NEW */
  height: 100px;                  /* NEW */
  justify-content: space-between; /* NEW */
}
.elem1 {
  width: 20%;
  flex-basis: 100%;               /* NEW */
  border: 1px solid red;
}
.elem2,
.elem3 {
  width: 75%;
  flex-basis: 40%;                /* NEW */
  border: 1px solid red;
}

Example 2: how to create seprate flex box for adding items into the box

.container {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
}

.item {
  width: 32%;
  padding-bottom: 32%; /* Same as width, sets height */
  margin-bottom: 2%; /* (100-32*3)/2 */
  position: relative;
}

Example 3: flex row

.item {
  order: 5; /* default is 0 */
}