JSFiddle - React, Tailwind, and code Playground

HTML

<div style="width: 500px;">
        <input name="day" size="2" />
        <input name="month" size="2" />
        <input name="year" size="4" />
    </div>

CSS

input {
        width: 100%;
    }
    
    .full {
        display: inline;
        float: left;
        margin: 0 2%;
        width: 96%
    }