body {
	background-color: #aaa;
	margin: 10px;
}
.Book {
}
.Book > section {
    display: none;
    white-space: pre-line;
}
.Book > section:target {
    display: block;
}
.Book > .home {
    display: block;
}
.Book > section:target ~ .home {
    display: none;
}
a:link, a:visited { 
 color: #0000aa;
 text-decoration: underline;  
} 
a:hover {
 text-decoration: none;
 background-color: #0000aa;
 color: #e0e0ff;
}
.wrapper {
	display: grid;
	grid-gap: 5px;
	color: #000;
	width: 500;
}
ul {
		margin: 0;
		padding: 0 30px 0 0;
		text-align: center;
}