JSFiddle - React, Tailwind, and code Playground

HTML

<div style="background: orange;">
    <div style="display: inline-block;"></div>
</div>
<div style="background: green;">
    <div style="background: #d9d9d9; display: inline-block; font-size: 48px; line-height: 12px;">H</div>
</div>

CSS

div{
    font-size: 0;
    line-height: 1;
}