body{
	margin: 0;
	background-color: #0d142f;
	}
	
.header{
	background: url("img/bg.jpg") no-repeat center -20px;
	background-size: 80%;
	width: 100%;
	text-align: center;
	}
	
#logo{
	width: 600px;
	margin-top: 18%;
	margin-bottom: 100px;
	}
	
.menu{
	width: 100%;
	text-align: center;
	}
	
.menu a{
	text-decoration: none;
	padding: 15px 30px;
	margin: 50px 20px;
	background: white;
	border: silver;
	border-radius: 5px;
	font-family: arial, sans-serif;
	font-size: 24px;
}

@media only screen and (max-width: 800px) {	
	#logo{
		width: 400px;
		margin-top: 20%;
		margin-bottom: 70px;

		}	
		
	.menu a{
		text-decoration: none;
		padding: 12px 24px;
		margin: 30px 15px;
		background: white;
		border: silver;
		border-radius: 4px;
		font-family: arial, sans-serif;
		font-size: 18px;
	}		
}	

@media only screen and (max-width: 500px) {	
	.header{
		background-size: 400px;
	}
	
	#logo{
		width: 70%;
		margin-top: 23%;
		margin-bottom: 100px;
	}	
		
	.menu a{
		text-decoration: none;
		padding: 12px 24px;
		margin: 30px 15px;
		background: white;
		border: silver;
		border-radius: 4px;
		font-family: arial, sans-serif;
		font-size: 18px;
	}		
}