@charset "utf-8";
/* CSS Document */

#exhibition_list{
    max-width: 990px;
    margin-right: auto;
    margin-left: auto;
    padding: 0;
    margin-top: 5rem;
	display: flex;
	flex-wrap: wrap;
	align-content: stretch;
	gap:15px;
}


#exhibition_list div{
    width: calc( (100% - 60px) / 4);
    /*border: 1px solid #CCCCCC;*/
    padding: 0;
    border-radius: 4px;
    margin-right: 0px;
    text-align: center;
    background-color: #FBFBFC;
    box-shadow: 3px 4px 9px 0px rgba(0, 0, 0, 0.14);
}
@media (max-width:850px) {
	#exhibition_list{
		gap:20px;
	}
	#exhibition_list div{
    	width: calc( (100% - 40px) / 3);
	}
}
@media (max-width:650px) {
	#exhibition_list{
		gap:20px;
	}
	#exhibition_list div{
    	width: calc( (100% - 40px) / 2);
	}
}
@media (max-width:450px) {
	#exhibition_list{
		gap:10px;
	}
	#exhibition_list div{
    width: 94%;
    margin-right: auto;
    margin-left: auto;
	}
}

#exhibition_list div h3{
    margin: 0;
    padding-top: 1rem;
    padding-right: 0;
    padding-left: 0;
    padding-bottom: 5px;
    font-size: 1.1rem;
    font-weight: normal;
    font-variant: normal;
    font-family: "Hiragino Sans", "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
}
#exhibition_list div img{
    padding: 0;
    margin-top: 1px;
    margin-right: auto;
    margin-left: auto;
    margin-bottom: 10px;
    display: block;
}
#exhibition_list div p{
    margin-top: 0;
    margin-right: 0;
    margin-left: 0;
    margin-bottom: 1rem;
    padding: 0;
    font-size: 0.85rem;
    font-weight: normal;
    font-variant: normal;
}
#exhibition_list div a {
    display: block; /* 元から display:block; を指定しておく */
    transition: opacity 0.3s ease; /* ← ここを追加 */
}

#exhibition_list div a:hover {
    opacity: 0.7;
}



.fullscreen-background {
    background-image: url(../ivent/img/0001.webp);
    background-size: cover;      /* 画像を縦横比を維持して全体に拡大縮小 */
    background-position: center; /* 中央配置 */
    background-repeat: no-repeat;
    width: 100vw;                /* ビューポート幅100% */
    height: 50vh;               /* ビューポート高さ100% */
    position: relative;
}

.fullscreen-background h1{
    margin-right: auto;
    margin-left: auto;
    width: 100%;
    text-align: center;
    height: auto;
    color: #000000;
    font-size: 6rem;
    display: block;
    position: absolute;
    top: 20%;
    left: auto;
    right: auto;
}
@media (max-width:650px) {
	.fullscreen-background h1{
		top: 15%;
		font-size: 5rem;
	}
}
@media (max-width:500px) {
	.fullscreen-background h1{
		top: 12%;
		font-size: 4rem;
	}
}
@media (max-width:400px) {
	.fullscreen-background h1{
		top: 10%;
		font-size: 3rem;
	}
}
.fullscreen-background .txt{
    padding-top: 1.5rem;
    padding-bottom: 1.5rem;
    background-image: -webkit-linear-gradient(270deg,rgba(255,255,255,0.70) 0%,rgba(255,255,255,0.70) 100%);
    background-image: -moz-linear-gradient(270deg,rgba(255,255,255,0.70) 0%,rgba(255,255,255,0.70) 100%);
    background-image: -o-linear-gradient(270deg,rgba(255,255,255,0.70) 0%,rgba(255,255,255,0.70) 100%);
    background-image: linear-gradient(180deg,rgba(255,255,255,0.70) 0%,rgba(255,255,255,0.70) 100%);
    position: absolute;
    top: 65%;     /* 親要素の50%位置に配置 */
    left: 50%;
    transform: translate(-50%, -50%);
    height: auto;
    display: block;
    border-radius: 10px;
    font-size: 1rem;
    line-height: 1.5;
    padding-right: 1.5rem;
    padding-left: 1.5rem;
    width: 90%;
	max-width: 1000px;
}
@media (max-width:650px) {
	.fullscreen-background .txt{
		top: 60%;
	}
}
@media (max-width:500px) {
	.fullscreen-background .txt{
		top: 58%;
	}
}