html{
	height: 100%;
	overflow: hidden;
}
body{
	position: relative;
	width: 100%; height: 100%;
	margin: 0; padding: 0;
	font-family: Arial,Helvetica,"ヒラギノ角ゴ Pro W3","Hiragino Kaku Gothic Pro W3","メイリオ",Meiryo,"ＭＳ Ｐゴシック",Osaka,sans-serif;
	font-size: 16px; *font-size: medium; font-size: 100%;
	font-weight: normal;
	color: #000; background-color: #fff;
	overflow: hidden;
}
.header{
  width: 100%; height: 40px;
  margin: 0 auto;
  padding-top: 10px;
  position: relative;
  background-color: #f3ecf0;
  border-color: #999;
  border-width: 0 0 1px 0;
  border-style: solid;

}
h1{
	margin: 0 0 0 1rem;
	font-size: 1rem;
}
.footer{
  width: 100%; height: 40px;
  border-color: #999;
  border-width: 1px 0 0 0;
  border-style: solid;
  position: relative;
  background-color: #f3ecf0;
}
.copyright{
  clear: both;
  width: 100%;
  margin: 2em auto 2em;
  text-align: center;
  font-size: 1em;
  font-weight: normal;
  line-height: 1.5em;
}
#main{
	margin: 0 auto; padding: 0;
	width: 100%; height: 100%;
}
#viewer{
	position: relative;
	width: 100%; height: 100%;
	margin: 0; padding: 0;
	display: block;
}
.alter{margin:15px;}