* {
	margin: 0;
	padding: 0;
	box-sizing: border-box;
}

body {
	overflow: hidden;
	position: relative;
	width: 100vw;
	height: 100vh;
}

.page {
	position: absolute;
	width: 100%;
	height: 100%;
	left: 0;
	top: 0;
	padding: 0;
	display: none;
	overflow-y: scroll;
	padding-bottom: 50px;
	background-color: #e6f3ff;
	z-index: 0;
}

.page.active {
	display: block;
	z-index: 1;
}

.btn {
	display: inline-block;
	padding: 10px 20px;
	background-color: #007bff;
	color: white;
	border: none;
	border-radius: 5px;
	cursor: pointer;
	text-decoration: none;
	margin: 10px;
}

.content {
	margin-top: 50px;
	text-align: center;
}