JSFiddle - React, Tailwind, and code Playground

HTML

<div class="button_holder">
    <input type="button" class="proceed" value="Go Forward" />
</div>

<div class="button_holder">
    <input type="button" class="proceed" value="Long Teeeext Value" />
</div>

<div class="button_holder">
    <input type="button" class="proceed" value="Go Back" />
</div>

CSS

.button_holder {
	background: #eee;

	position: relative;
	padding: 3px;
	margin: auto;

	border: 1px solid #fff;
}

.proceed {
	background: #fff;

	border: none;
	display: block;
	padding: 8px 16px;
	font: 9pt Georgia, "Times New Roman", Times, serif;
	font-weight: 600;
	color: #555;
	text-align: center;
	text-transform: uppercase;
	text-shadow: 0px 1px 1px rgba(255, 255, 255, .3);
	cursor: pointer;

	border: 4px solid #ccc;

	-webkit-box-shadow: inset 0 0 0 1px rgba(0, 0, 0, .1);
	box-shadow: inset 0 0 0 1px rgba(0, 0, 0, .1);
}

JavaScript

$('.button_holder .proceed').each(function() {
    console.log(parseInt($(this).outerWidth()));
});