JSFiddle - React, Tailwind, and code Playground

HTML

<div class="a">1</div>
<div class="a">2</div>
<div class="a">3</div>
<div class="a">4</div>
<div class="a">5</div>
<div class="a">6</div>
<div class="a">7</div>
<div class="a">8</div>
<div class="a">9</div>
<div class="a">10</div>
<div class="a">11</div>
<div class="a">12</div>
<div class="a">13</div>
<div class="a">14</div>

CSS

.a {
    float:left;
    width:150px;
    height:150px;
    background:blue;
    margin:10px;
    font-size:30px;
    color:white;
    text-align:center;
}