JSFiddle - React, Tailwind, and code Playground

HTML

<body>
		<div class="main">
			<div class="choices-wrap">
				<div class="choices">
					<a class="choice" href="#">Item</a>
					<a class="choice" href="#">A bigger item</a>
					<a class="choice" href="#">Item</a>
					<a class="choice" href="#">An even bigger item still</a>
					<a class="choice" href="#">Item</a>
					<a class="choice" href="#">A bigger item</a>
					<a class="choice" href="#">Item</a>
					<a class="choice" href="#">An even bigger item still</a>
					<a class="choice" href="#">Item</a>
					<a class="choice" href="#">A bigger item</a>
					<a class="choice" href="#">Item</a>
					<a class="choice" href="#">An even bigger item still</a>
				</div>
			</div>
		</div>
	</body>

CSS

*, *:before, *:after {
    box-sizing: border-box;
}
html body {
    font-family: "Helvetica Neue",Helvetica,Arial,sans-serif;
    font-size: 16px;
    line-height: 22px;
    margin: 0;
}
html body .main .choices-wrap {
    background: none repeat scroll 0 0 #ccc;
    display: block;
    height: 250px;
    padding: 10px;
}
html body .main .choices-wrap .choices {
    align-content: flex-start;
    background: none repeat scroll 0 0 #aaa;
    display: flex;
    flex-flow: row wrap;
    height: 230px;
}
html body .main .choices-wrap .choices .choice {
    background: none repeat scroll 0 0 #555;
    border: 1px solid #000;
    color: #ffffff;
    display: block;
    flex-grow: 1;
    height: 66.6667px;
    line-height: 66.6667px;
    margin-left: 10px;
    margin-top: 10px;
    padding: 0 10px;
    text-align: center;
    text-decoration: none;
}