#bookHomeBtn{
	position:fixed;
	background:#4c3b25;
	padding:12px 22px;
	top:10px;
	left:10px;
	border-radius:500px;
	font-size:3em;
}
@media screen and (max-width:601px){#bookHomeBtn{font-size:2em;padding:12px 18px;}}
#bookHomeBtn:hover{
	background:#b7ce7b;
	color:#4c3b25;
}

.tlAbs{position:absolute;}
@media (min-width:601px){/* grand ecran */
	body{
		padding:0px;
		margin:0px;
		height:100vh;
		width:100vw;
	}
	#bookP-left-col{
		top:0px;
		left:0px;
		height:100%;
		width:65%;
	}
	#bookP-right-col{
		top:0px;
		left:65%;
		height:100%;
		width:35%;
	}
	.bookP-row-1{
		top:0px;
		left:0px;
		width:100%;
		height:50%;
	}
	.bookP-row-2{
		top:50%;
		left:0px;
		width:100%;
		height:30%;
	}
	.bookP-row-3{
		top:80%;
		left:0px;
		width:100%;
		height:20%;
	}
}
@media (max-width:600px){/* petit ecran */
	body{
		padding:0px;
		margin:0px;
		height:160vh;
		width:100vw;
	}
	#bookP-left-col{
		width:100%;
		left:0px;
		top:0px;
		height:80vh;
	}
	#bookP-right-col{
		width:100%;
		left:0px;
		top:80vh;
		height:80vh;
	}
	.bookP-row-1{

		top:0px;
		left:0px;
		width:100%;
		height:35vh;
	}
	.bookP-row-2{
		top:35vh;
		left:0px;
		width:100%;
		height:25vh;
	}
	.bookP-row-3{
		top:60vh;
		left:0px;
		width:100%;
		height:20vh;
	}
}