	<style>
		div#page {
			max-width: 900px;
			margin-left: auto;
			margin-right: auto;
			padding: 20px;
		}
		
		.back-to-top {
			position: fixed;
			bottom: 35px;
			right: 15px;
			color: black;
			display: none;
               
		}

			
	</style>