body {
	background: url(img/3422481_m.jpg) no-repeat;
	background-attachment: fixed;
}
header {
	text-align: center;
	padding: 20px 10px;
	color: #fff;
}
header p {
	margin: 0;
}
h1 {
	font-size: 40px;
	margin: 0;
}
.main_contents {
	background-color: rgb(255 255 255 / 0.5);
}
.main_contents p {
	margin: 10px;
	padding: 0 10px;
}
h2 {
	padding: 10px 20px;
	font-size: 32px;
}
h3 {
	margin: 0 30px;
	padding: 0;
	border-bottom: solid 5px skyblue;
	display: inline-block;
}
.image-box {
	text-align: center;
}
.image-box img {
	width: 90%;
}
table {
	margin:  auto;
	
}
table th {
	background-color: skyblue;
	padding: 10px;
}
table td {
	padding: 10px;
}
footer {
	text-align: center;
	background-color: #ededed;
	padding: 10px;
}