body{
	margin:0;
	padding:0;
	background: url(nature.png);
	
	background-attachment: fixed !important;   
	background-repeat: no-repeat !important;
	background-size: cover !important;
	background-position: top;
}	


	
	
}

.prosat{
	width:350px;
	height:200px;
	border-radius:50%;
	position:absolute;
	top:30%;
	left:calc(50% - 300px);
	
}