.ad {
 font-weight: bold;   
}
.ad::after{
    content: "  \20AC"; 	
}

.responsive_1 { width: 100%; height: 100px; margin: auto;}
@media(min-width: 500px) { .responsive_1 { width: 100%; height: 60px; margin: auto;} }
@media(min-width: 800px) { .responsive_1 { width: 100%; height: 90px; margin: auto;} }