CSS Animatable grid Property Example

<!DOCTYPE html>
<html>
<head>
<style> 
#container {
    display: grid;
    grid: auto / auto auto auto auto;
    background: #333;
    grid-gap: 5px;
    padding: 5px;
	box-shadow: 0 0 10px 0 #aaa;
    animation: anim 5s infinite;
}

#container .grid-item {
    background-color: #97ff99;
    text-align: center;
    padding: 10px 0;
    font-size: 20px;
}

@keyframes anim {
	50% {grid: 40px 60px 80px 100px / auto auto;}
}
</style>
</head>
<body>

<h1>Animatable 'grid' Property</h1>
<hr>
  
<p>Experience the changing grid layout using grid property.<br>The grid is transitioning between '2 rows of equal height' and '2 columns of different height'.</p>

<div id="container">
	<div class="grid-item">1</div>
	<div class="grid-item">2</div>
	<div class="grid-item">3</div>  
	<div class="grid-item">4</div>
	<div class="grid-item">5</div>
	<div class="grid-item">6</div>
	<div class="grid-item">7</div>
	<div class="grid-item">8</div>
</div>

</body>
</html>