<div class="wrapper">

  <div class="gold">1</div>
  <div class="red">2</div>
  <div class="blue">3</div>

  <code>
    flex-flow: column wrap-reverse;
  </code>

</div>
* {
  box-sizing: border-box;
}

.wrapper {
  font-family: monospace;
  color: #fff;
  border: 2px solid #ddd;
  display: flex;
  flex-flow: column wrap-reverse;
} 

.wrapper > div {
  padding: 26px 12px;
  width: 30%;
  font-weight: 700;
  font-size: 3em;
  text-align: center;
}

.gold {
  background-color: gold;
}

.red {
  background-color: red;
}

.blue {
  background-color: steelblue;
}

code {
  position: absolute;
  top: 25%;
  left: 5%;
  color: #252525;
  font-size: 18px;
}

External CSS

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External JavaScript

This Pen doesn't use any external JavaScript resources.