标题按钮

<>
<div className="title">标题</div>
<style jsx>{`
.title {
	position: relative;
	left: 50px;
	font-size: 24px;
	width: 170px;
	background-color: #4d8cf3;
	line-height: 50px;
	height: 50px;
	color: #ffffff;
	text-align: center;
	margin: 20px 0;
}
.title:before {
	content: "";
	width: 0;
	height: 0;
	position: absolute;
	top: 50px;
	left: 47%;
	border-left: 8px solid transparent;
	border-right: 8px solid transparent;
	border-top: 10px solid #4d8cf3;
}
`}</style>
</>