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>
    <span class="stretch"></span>
</div>

CSS

#container {
    text-align: justify;
    -ms-text-justify: distribute-all-lines;
    text-justify: distribute-all-lines;
    
    /* just for demo */
    min-width: 612px;
}

.box {
    width: 150px;
    height: 125px;
    margin: 20px;
    background-color: #ccc;
    vertical-align: top;
    display: inline-block;
    *display: inline;
    zoom: 1
}
.stretch {
    width: 100%;
    display: inline-block;
    font-size: 0;
    line-height: 0
}