CodePen Embed - grid align content

<div class="grid-container">
  <div>1</div>
  <div>2</div>
  <div>3</div>  
  <div>4</div>
  <div>5</div>
  <div>6</div>  
</div>

body{
  padding:0;
  margin:0;
}
.grid-container {
  display: grid;
  align-content:space-around;
  grid-template-columns: auto auto auto;
  grid-gap: 10px;
  background-color: #2196F3;
  padding: 10px;
  height:100vh;
}
.grid-container > div {
  background-color: rgba(255, 255, 255, 0.8);
  text-align: center;
  padding: 20px 0;
  font-size: 30px;
}

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