.seiteninhalt{margin-left:auto; margin-right:auto;width:800px;font-family:Calibri,Arial}

#top-balken{position:absolute; top:25px; width:800px; text-align:center; margin-left:auto;
	margin-right:auto; height:250px; background-color:white}
#message{position:absolute; top:100px; width:800px; text-align:center; margin-left:auto;
	margin-right:auto; height:200px; background-color:white}
	
h1{margin-left:auto; margin-right:auto; margin-bottom:0px ; font-size:30px; font-weight:bold}
h2{margin-left:auto; margin-right:auto; margin-bottom:0px ; font-size:20px}
h3{margin-left:auto; margin-right:auto; margin-bottom:0px ; font-size:15px}

#kontakt{position:absolute; top:300px; width:800px; text-align:center; margin-left:auto;
	margin-right:auto; height:200px; background-color:white}