<div class="grid">
	<div class="item"></div>
	<div class="item"></div>
	<div class="item"></div>
	<div class="item"></div>
	<div class="item"></div>
	<div class="item"></div>
	<div class="item"></div>
	<div class="item"></div>
	<div class="item"></div>
	<div class="item"></div>
	<div class="item"></div>
	<div class="item"></div>
</div>
* {
	box-sizing: border-box;
}

.grid {
	display: grid;
	grid-template-columns: repeat(5, 1fr);
	grid-auto-rows: 200px;
	gap: 20px;
	counter-reset: item;
}

.item {
	counter-increment: section;
	background: red;
	padding: 20px;
	
	&::after {
		content: counter(section);
	}
	
	&:nth-child(2n - 1) {
		grid-column: 3 / span 2;
		grid-row: span 2;
		background: skyBlue;
	}
	
	&:nth-child(4n - 1) {
		grid-column: 1 / span 2;
		grid-row: span 2;
		background: blue;
	}
}

External CSS

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External JavaScript

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