@charset "UTF-8";
body{
	width:1000px;
	margin:20px auto;
	background:url("bg.jpg");
	background-attachment:fixed;
	background-size:cover;
	}
header, article, section, footer, address{
	display:block;
	border:1px solid #ccc;
	background:#fff;
	margin:0 0 10px;
	padding:10px 20px;
	}
table{
	margin:auto;
	}
th, td{
	padding:1ex;
	}
h1, h2, nav, .c{
	text-align:center;
	}
.s{
	font-size: small;
	}
.cs{
	font-size: small;
	text-align:center;
	}
.c1{
	background:#fff8f8;
	}
.c2{
	background:#fff0f0;
	}
.c3{
	background:#ffe0e0;
	}
.c4{
	background:#ffd8d8;
	}