瓜皮之牙

<style>
.main{
	text-align: center; /*让div内部文字居中*/
	background-color: #fff;
	border-radius: 20px;
	width: 300px;
	height: 350px;
	margin: auto;
	position: absolute;
	top: 0;
	left: 0;
	right: 0;
	bottom: 0;
}
</style>

<div class="main">
<h1>瓜皮之牙</h1>
</div>