Demo: CSS order

<div class='container'>
  <div class='item item1'>Item 1</div>
  <div class='item item2'>Item 2</div>
  <div class='item item3'>Item 3</div>
</div>

.container {
  display: flex;
  justify-content: space-around;
  width: 100%;
  height: 100vh;
  background-color: #f0f0f0;
}

.item {
  background-color: #4CAF50;
  color: white;
  padding: 20px;
  margin: 10px;
  border-radius: 5px;
  text-align: center;
}

.item1 {
  order: 2;
}

.item2 {
  order: 1;
}

.item3 {
  order: 3;
}

// No JavaScript required for this demo