* {
	font-family: "ヒラギノ角ゴシック","メイリオ","MS Pゴシック";
	margin: 0;
	padding: 0;
}
body {
	margin: 0;
	padding: 0;
}
#wapper {
	display: flex;
	flex-direction: column;
	min-height: 100vh;
}
header {
	width: 100%;
	height: 78px;
	background-image: url('../images/haeder_background_03.gif');
	
}
.logo {
	margin-top: 20px;
}
nav {
	width: 1200px;
	margin: 0 auto;
	overflow: hidden;
}
nav ul {
	overflow: hidden;
	float: right;
	margin-top: 20px;

}
#head_nav li {
	float: left;
	list-style: none;
	font-size: 17px;
	padding: 10px 0 10px 0; 
	margin-left: 20px;
}
#head_nav a {
	color: #ffffff;
	text-decoration: none;
}
#content_area {
	width: 1200px;
	margin: 0 auto;
	overflow: hidden;
}
#left_area {
	width: 620px;
	float: left;
	margin-right: 50px;
	margin-bottom: 50px;
}
#right_area {
	width: 530px;
	float: right;
	margin-bottom: 50px;
}
footer {
	width: 100%;
	height: 42px;
	background-image: url('../images/footer_background.gif');
	padding-top: 36px;
	margin-top: auto;
}
.copy {
	width: 1200px;
	margin: 0 auto;
	font-size: 12px;
	color: #ffffff;
	text-align: right;
}