<p>
	<button type="button">Change display property</button>
</p>

<div id="wrapper">
	<div id="div1" class="content">Lorem ipsum dolor sit amet, consectetur adipisicing elit. Hic, aliquam.</div>
	<div id="div2" class="content">Lorem ipsum dolor sit amet, consectetur adipisicing elit. Doloribus, asperiores, vero dolorum earum sapiente dicta est iusto molestias placeat architecto. Rem neque obcaecati nostrum quae explicabo sint esse dolores quis!</div>
	<div id="div3" class="content">Lorem ipsum dolor sit amet, consectetur adipisicing elit. Adipisci, iure ipsa dolorem iusto aliquid recusandae.</div>
</div>

body {
	background-color: #333;
	margin:1em;
}
#wrapper {
	margin:0 auto;
}

.content {
	padding:.5em;
	float:left;
	width:33.3%;
	box-sizing: border-box;
}
.display_cell {
	display: table;
}
.display_cell>.content {
	display:table-cell;
	float:none;
}


/* styling */
#div1 {
	background-color: #defd90;
}
#div2 {
	background-color: #f7abd9;
}
#div3 {
	background-color: #9ed6f9;
}
p {
    margin-bottom:2em;
    text-align: center;
}
button {
    font-size:1.5em;
    padding:.3em;
}

document.getElementsByTagName('button')[0].onclick = function () {
	var _wrapper = document.getElementById('wrapper');
	if(_wrapper.classList.contains( 'display_cell')) {
		_wrapper.classList.remove('display_cell');
	} else {
		_wrapper.classList.add('display_cell');
	}
}