.reveal {
	background-image: url('schluchtbrücke.jpg');
}

.reveal .slides > section,
.reveal .slides > section > section {
	text-align: left;
	font: 'Book Antiqua';
	font-size: 7vh;
	color: white;
	/* text-shadow: 2px 7px 5px rgba(0,0,0,0.3), 0px -4px 10px rgba(255,255,255,0.3); */
	text-shadow: 0 0 10px #fff, 0 0 20px #fff, 0 0 30px gray, 0 0 40px gray, 0 0 50px gray, 0 0 60px gray, 0 0 70px gray;
}