JSFiddle - React, Tailwind, and code Playground

HTML

<div class="container">
    <div></div><!--
    --><div></div><!--
    --><div></div><!--
    --><div></div><!--
    --><div></div><!--
    --><div></div><!--
    --><div></div><!--
    --><div></div>
</div>

CSS

.container {
    background-color: lightblue;
    width: 50%;
    white-space: nowrap;
}
.container > div {
    display: inline-block;
    width: 33.3333333333%;
    padding: 0 10px;
    box-sizing: border-box;
    height: 100%;
    vertical-align: top;
}
.container > div:before {
    content:"";
    display: block;
    padding-bottom: 56.25%;
    background-color: #FFF;
}
.container > div:nth-child(1):before {
    padding-bottom: 75%;
}