[Malleys]

<div class="container">
	<div class="item">item-1</div>
	<div class="item item-list">
		<div class="elem">elem-1</div>
		<div class="elem">elem-2</div>
		<div class="elem">elem-3elem-3-elem-1ele</div>
		<div class="elem">elem-3-elem-1</div>
		<div class="elem">elem-3-elem-2</div>
		<div class="elem">elem-3-elem-3-elem-3-elem-1</div>
		<div class="elem">elem-4-elem-1</div>
		<div class="elem">elem-5</div>
	</div>
	<div class="item item-filler">item-2</div>
	<div class="item">item-3</div>
</div>
<style>

	.container {
		width: 600px;
		box-shadow: 0 0 0 2px, inset 0 0 0 1em white;
		background: gray;
		display: flex;
		align-items: flex-start;
		align-content: flex-start;
		flex-wrap: wrap;
		resize: both;
		overflow: auto;
	}
	
	.container > * {
		background: gray;
		padding: 2em;
		box-shadow: inset 0 0 0 1em white;
	}
	
	.item-list {
		display: contents;
	}
	
	.item-filler {
		flex: 1;
	}
	
	.container > *  > * {
		background: red;
		padding: .8em;
		margin: 1.2em;
	}
	
</style>