body {
    background-color: #686C89;
    font-family: "Kiwi Maru", serif;
}

main {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.exhibition_title{
  margin: 50px auto 0px;
  color: #333;
  font-size: 64px;
  background-color: #4A6483;
  border: 8px solid #fff;
  width: 400px;
  height: 112px;
  border-radius: 15px;
  display: flex;
  justify-content: center;
  text-align: center;
  align-items: center;
}
h1 { 
  font-weight: 370;
  color: #fff;
  text-align: center;
  font-size: 64px;
  margin: auto;
}
.exhibition_attention{
  color: #fff;
  text-align: center;
  font-size: 24px;
  margin: 20px auto;
}

.exhibition-buttons {
    width: 40%;
}

.exhibition-button {
    background-color: #585D84;
    border: 5px solid #C7B29C;
    color: #d9d9d9;
    border-radius: 20px;
    width: 30%;
    margin: 0 1.4%;
    padding: 3%;
    font-size: 2em;
    font-family: "Kiwi Maru", serif;
}

.exhibition-button.active {
    background: #eee;
    color: #000;
}

.exhibition-row {
    display: flex;
    justify-content: center;
    margin-bottom: 2%;
}

[data-tab="4"] {
    width: 55%;
}

[data-tab="5"] {
    width: 40%;
}

.exhibition-content {
    display: none;
    flex-direction: column;
    width: 30%;
}

.exhibition-content.active {
    display: flex;
    flex-direction: column;
}

.exhibition-open {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 100%;
    height: auto;
}



.exhibition-frame {
    background-image: url(gakubuchi.png);
    background-size: cover;
    background-position: center;
    width: 95%;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 13% auto 0 auto;
    position: relative;
    
}



.frame {
  position: absolute;
  top: 50%;
  left: 47.5%;
  width: 140%;  
  height: 140%;
  transform: translate(-50%, -50%); 
  object-fit: fill;
  pointer-events: none;
  margin: 0px auto 0px auto;
}

.exhibition-frame-open {
    background-image: url(gakubuchi.png);
    background-size: cover;
    background-position: center;
    width: 95%;
    height: 400px;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 13%;
}

.exhibition-syoukai-img {
    width: 63%;
    height: auto;
    object-fit: cover;
    display: block;
    margin: 0 auto;
}

.exhibition-title-img {
    width: 80%;
    margin: 50px auto 0 auto;
}

.exhibition-title {
    display: flex;
    flex-direction: row;
    align-items: center;
    position: relative;
    margin: auto 8%;
}

.exhibition-title::before {
    content: '';
    position: absolute;
    left: 50%;
    bottom: 0;
    display: inline-block;
    width: 80%;
    height: 4px;
    -webkit-transform: translateX(-50%);
    transform: translateX(-50%);
    background-color: #E7E4E0;
}

.exhibition-name {
    color: #FFFFFF;
    width: 60%;
    margin: 3% auto;
    font-size: 1.2em;
}

.exhibition-dantai {
    margin-left: auto;
    margin-right: auto;
    color: #FFFFFF;
}

.exhibition-bun {
    color: #FFFFFF;
    margin: auto 8%;
    height: 80px;
    overflow: auto;
    -ms-overflow-style: none;
    scrollbar-width: none;
    font-size: 1em;
    padding-bottom: 3%;
}

.exhibition-bun::-webkit-scrollbar {
    display: none;
}

.exhibition-setumei {
    position: relative;
}

/* 左上角 */
.exhibition-setumei::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 24px;
    height: 24px;
    border-top: 4px solid #E7E4E0;
    border-left: 4px solid #E7E4E0;
}

/* 右上角 */
.exhibition-setumei::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 24px;
    height: 24px;
    border-top: 4px solid #E7E4E0;
    border-right: 4px solid #E7E4E0;
}

/* 左下角 */
.exhibition-setumei span::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 24px;
    height: 24px;
    border-bottom: 4px solid #E7E4E0;
    border-left: 4px solid #E7E4E0;
}

/* 右下角 */
.exhibition-setumei span::after {
    content: '';
    position: absolute;
    bottom: 0;
    right: 0;
    width: 24px;
    height: 24px;
    border-bottom: 4px solid #E7E4E0;
    border-right: 4px solid #E7E4E0;
}

@media screen and (max-width :480px) {
    .exhibition_title{
       border: 8px solid #fff;
       width: 260px;
       height: 72px;
       border-radius: 7.5px;
     }
     h1 {
       font-size: 32px;
     }
    .exhibition_attention{
       font-size: 18px;
     }
    .exhibition-buttons {
        width: 90%;
        border-radius: 30px;
    }

    .exhibition-content {
        display: none;
        flex-direction: column;
        width: 80%;
    }
　.exhibition-button {
        font-size: 1em;
    }
    .exhibition-frame {
        background-image: url(gakubuchi.png);
        background-size: cover;
        background-position: center;
        display: flex;
        justify-content: center;
        align-items: center;
        margin-top: 13%;
    }
}