JSFiddle - React, Tailwind, and code Playground

HTML

<div id="wrapper">
    <div class="inline">123</div>
    <div class="inline">456</div>
</div>

<br />

<div id="wrapper">
    <!-- No newline between divs -->
    <div class="inline">123</div><div class="inline">456</div>
</div>

CSS

#wrapper {
    border: 1px solid red;
}

.inline {
    border: 1px solid blue;
    display: inline-block;
}