JSFiddle - React, Tailwind, and code Playground

HTML

<div class="step"></div><div class="line"></div>

CSS

.step {
	width: 20px;
	height: 20px;
	background: white;
	border: 1px red solid;
	display:inline-block;
	padding:0px;
	margin:0px;
    font-size:0;
}

.line {
	height:1px;
	width:20px;
	background:#717171;
	border-bottom:0px solid #313030;
	display:inline-block;
	padding:0px;
	margin:0px;
     font-size:0;
}