.home-header {
  background-image: url('../img/Schloss-Belvedere-Oberes-Belvedere_Oesterreich-Werbung_Willfried-Gredler-Oxenbauer.jpg');
  background-repeat: no-repeat;
  background-attachment: fixed;
  background-position: center;
  -o-background-size:cover; 
  -moz-background-size:cover; 
  -webkit-background-size:cover; 
  background-size:cover; 
}


.accordion-button {
  font-weight: bold;
}