body {
	background-color: #333;
}

#Header {
	background-color: rgba(123, 123, 123, 0.5);
	color: #FFF;
}
#Header div.head_area a.logo {
	width: 40px;
	height: 40px;
	background-image: url(../../../../file/image/logo.png);
	background-repeat: no-repeat;
	background-size: cover;
	background-position: 0 -40px;
}
#Header div.book {
    position: absolute;
    top: 0;
    left: 70px;
    left: calc(25% - 20px);
}
#Header div.book a {
	display: block;
	width: 40px;
	height: 40px;
	background-image: url(../../../../file/image/bookmark.png);
	background-repeat: no-repeat;
	background-size: cover;
	background-position: 0 0;
}