body { 
			background-color: grey;
			color: black;
			font-family: Arial, 'Helvetica Neue', Helvetica, sans-serif; 

		}
		h1 {
			font-size:2em;
			color: black;
			margin: 0.5em;
		}
		a:link {
			background-color: red;
			color: black;
			text-decoration: none;
		}
		a:visited {
			background-color: red;
			color: black;
			text-decoration: none;
		}
		a:hover {
			background-color: white;
			color: black;
			text-decoration: none;
		}
		a:active {
			background-color: hotpink;
			color: red;
			text-decoration: none;
		}
		.center { text-align: center; }
		.block {
			text-align: left;
			margin: auto;
			width: 48em;
			border: 3px solid black;
			padding: 1.5em; 
		}