html {
	scroll-behavior: smooth;
}
.pagetop {
	height: 50px;
	width: 50px;
	position: fixed;
	right: 30px;
	bottom: 30px;
	background: #fff;
	border: solid 2px #000;
	border-radius: 50%;
	display: flex;
	justify-content: center;
	align-items: center;
	z-index: 2;
}

.pagetop__arrow {
	height: 10px;
	width: 10px;
	border-top: 3px solid #000;
	border-right: 3px solid #000;
	transform: translateY(20%) rotate(-45deg);
}