.board-header { display: none;}

.board-category-wrap {margin-bottom: 4%;}
.board-category-wrap ul {text-align: center;}
/* 220915 Y mod */
.board-category-wrap ul li { float: left; width: 16.6%; font-weight: 700; border: 1px solid #e1e1e1; border-left: none; margin-bottom: 5px; box-sizing: border-box;}
.board-category-wrap ul li:nth-child(6n+1) {border-left: 1px solid #e1e1e1;}
.board-category-wrap ul li a {display: block; padding: 10px 0; text-align: center; color: #666;}
.board-category-wrap ul li.selected a {color: #f5933b; }
/* 220915 Y mod : end */

.gallery-list { width: 100%; }
.gallery-list:after { content: ''; display: block; float: none; clear: both; }
.gallery-list .gallery-item { float: left; width: 100%; margin-top: 2%; }
.gallery-list .gallery-item > div { float: left; width: 100%; }
.gallery-list .gallery-item .num { margin-bottom: 10px; }
.gallery-list .gallery-item .thumb { float: left; position: relative; overflow: hidden; background: #e7e7e7; }
.gallery-list .gallery-item .thumb .thumb_img { position: absolute; top: 0; bottom: 0; left: 0; right: 0; background-position: center center; cursor: pointer; background-repeat: no-repeat; }
.gallery-list .gallery-item .thumb .thumb_img.cover { background-size: cover; }
.gallery-list .gallery-item .subject { font-size: 20px; font-weight: 600; line-height: 150%; margin: 15px 0; overflow: hidden; }
.gallery-list .gallery-item .info { padding-top: 20px; border-top: solid 1px #ddd; }
.gallery-list .gallery-item .info > p { margin-top: 5px; }
.gallery-list .gallery-item .info > p:first-child { margin-top: 0; }
.gallery-list .gallery-item:nth-child(1) { margin-top: 0; }
.gallery-list .empty { width: 100%; text-align: center; padding: 50px 0; }
.gallery-list .empty > p { margin-bottom: 20px; }

@media ( min-width: 480px ) {
  .gallery-list .gallery-item:nth-child(2) { margin-top: 0; }
}
@media ( min-width: 480px ) and ( max-width: 767px ) {
  .gallery-list .gallery-item { width: 48.5%; margin-right: 3%; }
  .gallery-list .gallery-item:nth-child(2n+0) { margin-right: 0; }
}
@media ( min-width: 768px ) {
  .gallery-list .gallery-item { width: 22.75%; margin-right: 3%; }
  .gallery-list .gallery-item:nth-child(4n+0) { margin-right: 0; }
  .gallery-list .gallery-item:nth-child(3),
  .gallery-list .gallery-item:nth-child(4) { margin-top: 0; }
}
/* 220915 Y mod */
@media ( max-width: 768px ) {
	.board-category-wrap ul li { width: 33.33%; }
  .board-category-wrap ul li:nth-child(n) { border: 1px solid #e1e1e1; border-left: none; }
	.board-category-wrap ul li:nth-child(3n+1) {border-left: 1px solid #e1e1e1;}
}
/* 220915 Y mod : end */