JSFiddle - React, Tailwind, and code Playground

HTML

<div id="divQuizFillBlank">
<input type="text" id="textQuizFillBlankUserAnswer">
<input type="button" id="buttonQuizFillBlankSubmit" value="&gt;">
</div>

CSS

#divQuizFillBlank {
	margin-left: auto;
	margin-right: auto;
}
#textQuizFillBlankUserAnswer {
	border: 2px solid #000;
	font-size: 16px;
	font-weight: bold;
	width: 80%;
	height: 40px;
	float: left;
	box-sizing: border-box;
    vertical-align: middle;
}
#buttonQuizFillBlankSubmit {
	border: 2px solid #000;
	font-size: 20px;
	font-weight: bold;
	width: 10%;
	height: 40px;
	float: left;
	margin-left: 5px;
}