CSS Animatable order Property Example

<!DOCTYPE html>
<html>
<head>
<style>
#grid-container {
	display: grid;
    grid-template-columns: auto auto auto auto auto auto auto auto auto;
    background: #333;
    grid-gap: 5px;
    padding: 20px;
    box-shadow: 0 0 10px 0 #aaa;
    border-radius: 20px;
}
  
#grid-container div {
    width: 30px;
    height: 30px;
    text-align: center;
    line-height: 30px;
    font-size: 20px;
    background: red;
    border-radius: 50px;
}

#item1 {animation: anim 3s infinite; background: #ff0 !important; order: 1;}
#item2 {order:2;}
#item3 {order:3;}
#item4 {order:4;}
#item5 {order:5;}
#item6 {order:6;}
#item7 {order:7;}
#item8 {order:8;}
#item9 {order:9;}

@keyframes anim {
  50% {order: 10;}
}
</style>
</head>
<body>

<h1>Animatable 'order' Property</h1>
<hr>

<p>Experience the changing order of the item1 from position 1 to 9 and then back to position 1.</p>
  
<div id="grid-container">
  	<div id="item1">1</div>
  	<div id="item2">2</div>
  	<div id="item3">3</div>
  	<div id="item4">4</div>
  	<div id="item5">5</div>
  	<div id="item6">6</div>
  	<div id="item7">7</div>
  	<div id="item8">8</div>
  	<div id="item9">9</div>
</div>

</body>
</html>