@media screen and (min-width: 1440px){
	.main_image{
		width: 900px;
		height:500px;
	}
	.bu{
	background-color: #dbe8f6;
	text-align: left;
	/*opacity: 0.9;*/
	width: 640px;
	margin-top: -30px;
	margin-bottom: 20px;
	padding: 10px;
	font-family: 'Open Sans', sans-serif;
	font-size: 14px;
	float: right;
	color: #333;
	}
	.urheber{
		float: right;
		font-size: 0.66667em;
		font-size: 12px;
		margin-top: auto;
		margin-bottom: auto;
	}
	.bu-text{
		width: 80%;
		font-size: 14px;
		color: #000;
	}
}
@media screen and (min-width: 1024px) and (max-width: 1439px){
	.main_image{
		width: 834px;
		height:auto;
	}
	
	.bu{
	background-color: #dbe8f6;
	text-align: left;
	/*opacity: 0.9;*/
	width: 640px;
	margin-top: -30px;
	margin-bottom: 20px;
	padding: 15px 10px;
	font-family: 'Open Sans', sans-serif;
	font-size: 14px;
	float: right;
	color: #333;
	}
	.urheber{
		float: right;
		font-size: 0.66667em;
		font-size: 12px;
		margin-top: auto;
		margin-bottom: auto;
	}
	.bu-text{
		width: 90%;
		font-size: 14px;
	}
	
}
@media screen and (min-width: 768px) and (max-width: 1023px){
	.main_image{
		width: 752px;
		height:auto;
	}
	.bu{
	background-color: #dbe8f6;
	text-align: left;
	/*opacity: 0.9;*/
	width: 640px;
	margin-top: -30px;
	margin-bottom: 20px;
	padding: 15px 10px;
	font-family: 'Open Sans', sans-serif;
	font-size: 14px;
	float: right;
	color: #333;
	}
	.urheber{
		float: right;
		font-size: 0.66667em;
		font-size: 12px;
		margin-top: auto;
		margin-bottom: auto;
	}
	.bu-text{
		width: 90%;
		font-size: 14px;
	}
}
@media screen and (max-width: 767px){
	.main_image{
		width: auto;
		height:auto;
	}
	.mobile-three{
		width: 100%;
	}
	
	.bu{
	margin: 10px 0 20px 0;
	background-color: #dbe8f6;
	text-align: left;
	/*opacity: 0.9;*/
	/*width: 640px;*/
	/*margin-top: -25px;*/
	/*padding: 15px 10px;*/
	font-family: 'Open Sans', sans-serif;
	/*font-size: 14px;*/
	float: right;
	color: #333;
	}
	.urheber{
		float: right;
		font-size: 0.66667em;
		font-size: 12px;
		margin-top: auto;
		margin-bottom: auto;
	}
	.bu-text{
		width: 90%;
		font-size: 14px;
	}
	
}