@font-face {
	font-family: 'oswald';
	src: url('oswald.ttf'); 
}
.btn-back {position: fixed; 
top 0px; 
left 0px; 
width: 4vw; 
height: 4vw; 
z-index: 99; 
background-color: ; 
display: block;
}
body {
     font-family: sans-serif;
	}
h1, h2, h3 {
    font-weight: normal;
	}
.remark-slide-number {
    visibility:hidden
	}
.remark-slide-scaler {
     width: 100% !important;
     height: 100% !important;
     transform: scale(1) !important;
     top: 0 !important;
     left: 0 !important;
	}
.remark-slide-content{
	 font-size: 8vmin;
	 background-color: black;
     background-image: url("bg2.jpg");
     background-size: cover;
     color:white;
     text-align: center;
     vertical-align: middle;
    
     padding: inherit;
	-webkit-text-stroke: 0.05vh black;
	
	}