JSFiddle - React, Tailwind, and code Playground

HTML

<div class="parent">
    <div id="1" class="child" style="background-color: yellow"></div>
    <div id="2" class="child" style="background-color: blue"></div>
</div>

CSS

.parent {
    width: 400px;
    height: 400px;
    background-color: red;
}

.child {
    width: 100px;
    height: 100px;
    display: inline-table;
    margin-left: 20px;
}