body {
    margin: 0px;
    background: url(../img/bg.png);
    background-attachment: fixed;
    background-size: cover;
    background-position: center;
}

header {
    z-index: 999;
    width: 100%;
    position: fixed;
    height: 86pt;
    display: flex;
    align-items: center;
    align-content: center;
    flex-direction: row;
    flex-wrap: nowrap;
    justify-content: space-between;
}

header>img {
    width: auto;
    height: 85px;
    opacity: 0;
}

.buttons>a>svg {
    width: 30px;
    height: auto;
}

a {
    text-decoration: none;
    color: #fff;
}

.buttons>a {
    margin: 0px 5px;
    color: white;
}


.top_img {
    margin-top: 400px;
    width: 100%;
    height: 100%;
    background: linear-gradient(to top, rgba(0, 0, 0, 1) 0, rgba(0, 0, 0, 0) 100px, transparent 100px),
        #fff0 center/cover;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
}

.top_download {
    width: 12em;
    background: white;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: space-evenly;
    font-size: 1.3em;
    font-weight: bolder;
    border-radius: 999999px;
}



.top_download2 {
    width: 12em;
    background: white;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: space-evenly;
    font-size: 1.3em;
    font-weight: bolder;
    border-radius: 999999px;
    margin-bottom: 15em;

}

svg#meta {
    width: 27%;
}
.bottom_img {
    width: 100%;
    height: 70%;
    background: linear-gradient(to bottom, rgb(0 0 0) 0, rgb(0 0 0 / 0%) 100px, transparent 100px), linear-gradient(to top, rgb(0 0 0) 0, rgb(0 0 0 / 0%) 100px, transparent 100px), #fff0 center/cover;
    display: flex;
    justify-content: center;
    align-items: center;
}

.black {
    background: black;
}

.content {
    position: absolute;
    width: 100%;
    height: 100%;
}

.vt {
    color: white;
}

.reveal {
    width: 100%;
}

.reveal .vt {
    font-size: 2.5ex;
    display: flex;
    flex-direction: column;
    flex-wrap: nowrap;
    align-items: center;
}

.ytb_iframe {
    width: 70%;
    height: 350px;
}

.text_1 {
    margin-top: 100px;
    color: white;
}

.dg {
    padding: 50px 20%;
}

.dg1 {
    padding: 0px 20%;
}

.text_1 b {
    font-size: 2.5ex;
}

.exhibits {
    color: black;
    font-size: 2.5ex;
    display: flex;
    justify-content: center;
}

.exhibit_box {
    display: flex;
    flex-direction: column;
    flex-wrap: nowrap;
    justify-content: center;
    align-items: center;
    padding: 15px;
    border-radius: 10px;
    max-width: 350px;
    width: 85%;
    background: white;
    cursor: zoom-in;
    margin: 0px 5%;
    color: black;
}

.exhibit_img {
    height: 300px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr 1fr;
    gap: 2px;
    position: relative;
    overflow: hidden;
    width: 100%;
    border-radius: 5px;
}

.exhibit_img img:nth-child(1) {
    grid-row: 1/-1;
}

.exhibit_img img {
    object-position: center center;
    object-fit: cover;
    height: 100%;
    width: 100%;
}

.exhibit_img img:nth-child(2) {
    grid-row: 1;
    grid-column: 2;
}

.exhibit_img img:nth-child(3) {
    grid-row: 2;
    grid-column: 2;
}

.footer {
    background: black;
    width: 100%;
    height: 30%;
    color: white;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: center;
}


.footer img {
    height: 90%;
}

.footer :nth-child(2) {
    display: flex;
    align-items: center;
    flex-direction: column;
    flex-wrap: nowrap;
    margin-left: 10%;
}

@media screen and (max-width: 1050px) {
    .reveal .vt {
        display: flex;
        justify-content: center;
        align-items: center;
        flex-direction: column;
        flex-wrap: nowrap;
    }

    .footer {
        flex-direction: column;
    }

    .footer img {
        height: 55%;
    }

    .footer :nth-child(2) {
        margin-left: unset;
    }

    .dg {
        padding: 50px 5%;
    }

    .dg1 {
        padding: 0px 10%;
    }

    .ytb_iframe {
        width: 100%;
        height: 400px;
    }

    .exhibits {
        flex-direction: column;
        align-items: center;
    }

    .exhibit_box {
        margin-top: 35px;
    }
}


@media screen and (max-width: 1300px) {
    .ytb_iframe {
        width: 90%;
    }
}
@media screen and (max-width: 555px) {
    .dg {
        padding: 50px 0%;
    }

    .dg1 {
        padding: 0px 3%;
    }
}