@media only screen and (max-width: 767px) { 
      /* mobile Geräte */ 

div#logo {
		width:50%;
	 	margin-left: auto;
   	margin-right: auto;
	 	text-align:center;
}

div#iframe {
		margin:0 auto;
	 margin-top:30%;
	 text-align:center;
}



div#text1 {
	display:none;
}


#arrow_left, #arrow_right {
	display:none;
}

}

@media only screen and (min-width: 767px) {

	div#iframe {
	position: fixed;
	top: 30%;
	left: 15%;
	border:2px solid white;
	}


}