.book-desc .btn {
	width:250px;
	height:50px;
	background:transparent url(../imgs/index-bt.png) no-repeat left top;
	border:1px solid #7b3806;
	transition:all .15s;
	border-radius:3px;
	color:#7b3806;
	line-height:50px;
	vertical-align:middle;
	padding:0;
	text-indent:35px;
}
.book-desc .btn:hover {
	background:#7b3806 url(../imgs/index-bt.png) no-repeat left bottom;
	color:#fff;
	text-indent:50px;
}
.btn-choose-img {
    width: 150px;
}
.custom-cover-preview img {
    display:block;
    margin:auto;    
    max-height: 70vh;
    max-width: 80%;
    width: auto;
    height: auto;    
}