#main-header {
  background-image: url("https://www.johanniterkirche-mirow.de/wp-content/uploads/header14.jpg");
	background-position: center; 
  background-repeat: no-repeat; 
  background-size: cover;
}

#site-title {
  font-size: 40px;
	color: red;
	background: rgb(255,255,255,0.5)
}