JSFiddle - React, Tailwind, and code Playground

HTML

<div class="header-panel__favorites">
					<a href="#">В избранном:</a><span>3</span>
				</div>

CSS

.header-panel__favorites {
	float: left;
}
.header-panel__favorites span {
	margin-left: 10px;
	width: 25px;
	height: 25px;
	border: 1px solid #e74045;
	border-radius: 50px;
	display: block;
	float: left;
	text-align: center;
	padding-top: 3px;
	margin-top: -4px;
}
.header-panel__favorites a {
	margin-left: 10px;
	text-decoration: none;
	color: #2c2b2b;
	border-bottom: 1px solid #b6b6b6;
	-webkit-transition: 0.2s;
	-o-transition: 0.2s;
	transition: 0.2s;
	display: block;
	float: left;
}
.header-panel__favorites a:hover {
	border-bottom: 1px solid #fff;
}