/* bookBox */
#bookBox .wall { position: relative; overflow: hidden; display: block; }
#bookBox .wall-column { position: relative; float: left; width: 50%; display: block; box-sizing: border-box; }
#bookBox .wall-column .article { position: relative; margin: 15px; }
#bookBox .wall-column .album_box { box-shadow: 0 0 10px #c0c0c0; }
#bookBox .wall-column .article a { display: block; }
#bookBox .wall-column .article h3 { position: absolute; width: 100%; bottom: 0; left: 0; }
#bookBox .wall-column .article h3 a { margin: 10px; padding: 10px; background: rgba(255, 255, 255, .7); text-align: center; font-size: 18px; color: #444; }

/* album-info */
#album-info #bookBox .wall-column { width: calc(100% / 3); }
#bookBox .wall-column .album_box img { width: 100%; }

@media screen and (max-width: 1280px) {
	#album-info #bookBox .wall-column { width: 50%; }
}
@media screen and (max-width: 640px) {
	#bookBox .wall-column , #album-info #bookBox .wall-column { width: 100%; }
}