/* Sanftes Scrollen aktivieren */
html {
	scroll-behavior: smooth;
	}
a.back-to-top {
/* Quelle: P.Müller HTML + CSS 19.4 */
/*
<a title="nach oben" class="back-to-top" href="#top">&#8593;</a>
Der Pfeil nach oben (&#8593;) bleibt auch beim Scrollen immer rechts unten
*/
	position: fixed;
/*	position: absolute; */
	bottom: 0.5rem;
	right: 0.5rem;
	font-size: 1.5rem;
	line-height: 1;
	text-align: center;
	text-decoration: none;
	background: rgb(0,0,0,0,4);
	color: white;
	transition: background .3s ease-in-out;
	width: 2.5rem;
	height: 2.5rem;
	padding: 0.5rem;
	border-radius: 0.5rem;
	margin: 0.5rem;
	}
a.back-to-top:hover, a.back-to-top:focus {
	background-color: rgb(0,0,0,0,6);
	}