JSFiddle - React, Tailwind, and code Playground

HTML

<input class="left" value="spacing" />
<input class="right" value="spacing" />

CSS

input {
    font-size:24pt;
    letter-spacing: 20px;
    width: 70%;
}
.left {
    text-align:left;
}
.right {
    text-align:right;
}

JavaScript

var button = document.querySelector('input.right');
var shadowDom = button.webkitCreateShadowRoot();
shadowDom.innerHTML = '<div style="margin-right: -20px;">'+button.value+'</div>';