html, body
{
    font-size: 18px;
}
 .ruecklink p {
     font-family: 'Nunito', sans-serif;      
     font-size: 24px;
     font-weight: bold;
     
 }
.contentArea {
    width: 90%;
    min-width: 450px:;
    margin: 0 auto;
}
.anzeige {
	margin: 50px auto 0;
	width: 100%;
	height: auto;
}
.anzeige-l {
	float: left;
    margin-right: 3%;
	margin-bottom: 10px;
	max-width: 100%;
 } 
.anzeige-r {
	float: right;
	margin-left: 3%;
	margin-bottom: 30px;
	max-width: 100%;
} 

 @media only screen and (max-width: 640px) {
body {
	font-size: 16px;
}

.anzeige-l, .anzeige-r {
	max-width: 90%;
	float: none;
	margin: 0 auto 10px;
}