body {
	font-family: Times New Roman, sans-serif-serif;
	color: black;
	margin: 0em auto;
	max-width: 90%;
    background-color:white;
       }
	@media screen and (min-width: 400px) {
		body {
		max-width: 100%;
		}}
header {
/*	position: sticky;*/
	top: 0;
	left: 0;
	right: 0;
    bottom: 0;
	text-align: center;
    color: black;
	padding: 1em;
	background: red;
        }
header img {
	width: 10em;
    float: left;
}
main {
	padding-top: 1em;
	padding-bottom: 1em;
    grid-template-columns: auto auto;
	display: block;
	background-color: rgb(255,0,0,0.3);
/*	min-width: 16em;*/
	/* Mindestbreite (der Überschrift) verhindert Anzeigefehler in modernen Browsern */
}

main video {display: block; 
			margin: auto; 
			max-width: 20em;
}
h3		{
        margin-top: 1em;
        }
article {
    padding-left: 1em;
    padding-top: 0em;
    padding-buttom: 0em;
	padding-right: 1em;
}
aside {
	position: fixed;
	float: right;
	top: 20em
	width: 12em;
    padding: 1em;
    color: black;
}
a {color: red}

footer {
/*    position: sticky;*/
	text-align: left;
    color: black;
	padding: 0.25em 0em 0.25em 1em;
	background: red;
}

footer div {
	text-align: left;
  	background: red;
}
footer a {color: white}