/* showbox */
#showbox { background:#eee;}
#showbox span { background-color: rgba(255,255,255,.2);}
#showsum { left:15px; margin-top:10px;}
#showsum span { border:1px solid #ddd;}
#showsum span.sel { border:1px solid #f60;}
#showsum span img{ width: 100%; height: 100%; object-fit: cover;}

.showpage { width: 100%; position:relative;}
.showpage a { display:block; width:15px; border:1px solid #ddd; height:60px; line-height:60px; background:#eee; text-align:center; font-size:18px; position:absolute; left:0; top:-62px; text-decoration:none; color:#999;}
.showpage a#shownext { left:auto; right:0;}
.showpage a:hover { background:#ccc; color:#777;}