JSFiddle - React, Tailwind, and code Playground

HTML

<div id="container">
    <div class="box"></div>
    <div class="box"></div>
    <div class="box"></div>
    <div class="box"></div>
    <div class="box"></div>
    <div class="box"></div>
    <div class="box"></div>
    <div class="box"></div>
    <div class="box"></div>
    <div class="box"></div>
    <div class="box"></div>
    <div class="box"></div>
    <div class="box"></div>
    <div class="box"></div>
    <div class="box"></div>
    <div class="box"></div>
    <div class="box"></div>
    <div class="box"></div>
    <div class="box"></div>
    <div class="box"></div>
    <div class="box"></div>
    <div class="box"></div>
    <div class="box"></div>
    <div class="box"></div>
</div>

CSS

#container {
    border: 2px dashed #444;
    height: auto;
    text-align: justify;
    -ms-text-justify: distribute-all-lines;
    text-justify: distribute-all-lines;
    /* just for demo */
    width: 1023px;
}
.box {
    width: 327px;
    height: 320px;
    vertical-align: top;
    display: inline-block;
    *display: inline;
    zoom: 1
}
#container:after {
    content:"";
    width: 100%;
    display: inline-block;
    font-size: 0;
    line-height: 0
}
.box {
    background: #ccc;
    border:1px solid #000;
    margin-bottom:20px;
}