kindle-widget-1.css

#bookshelf {
	width:156px;
	margin: 0 auto;
}
.book { 
	-webkit-filter: grayscale(1); 
	-webkit-filter: grayscale(100%); 
	filter: grayscale(100%); 
	filter: gray;
	background-size:cover;
	background-position:center center;
	background-repeat: no-repeat;
	width:98px; // original
	height:147px; // original
	width: <?= (98/147)*172 ?>px; // new
	height:172px; // new
	box-shadow: 0 0 3px 3px rgba(0,0,0,0.09);
	display:block;
}
.reading {
	float: left;
	margin-right: 5px;
}
.read {
	float: left;
	width:98px; // original
	height:147px; // original
	width: <?= (98/147)*54 ?>px; // new
	height:54px; // new
	opacity: 0.8;
	margin: 0 0px 5px 0;
}