JSFiddle - React, Tailwind, and code Playground

HTML

<input type="submit"/>
<div>
    <input type="text"/>
</div>

CSS

input[type="submit"] {
    float: left;
    width: 100px;
}

div {
    overflow: hidden;
    padding: 0 10px;
}

div input[type="text"] {
    width: 100%
}