body {
	color: black;
	background: lightcyan;
	font-family: arial, sans-serif;
	width: 800px;
	margin-left: auto;
	margin-right: auto;
	}

h1, h2, h3, h4 {
	font-family: arial, sans-serif;
	font-weight: bold;
	text-align: center;
	}

a:link {
	color: blue;
	}

a:visited {
	color: green;
	}

a:active {
	color: red;
	}

tr {
	vertical-align: top;
	}

a img {
	border-style: none;
	}

.centred {
	text-align: center;
	margin-left: auto;
	margin-right: auto;
	}