.slideshow-container {
    position: relative;
    width: 100%;
    height: 100vh;
    max-height: 1000px;
    overflow: hidden;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
}

.slideshow {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
}

.slideshow iframe {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 100%;
    height: 100%;
    max-width: 100%;
    max-height: 100%;
    border: none;
    opacity: 0;
    transition: opacity 1s ease-in-out;
    object-fit: contain;
    transform: translate(-50%, -50%);
}

.slideshow iframe.active {
    opacity: 1;
}

.thumbnail-nav {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 10px;
    width: 100%;
    background: rgba(0, 0, 0, 0.5);
    padding: 10px 0;
}

.thumbnail-nav img {
    width: 60px;
    height: 40px;
    object-fit: cover;
    margin: 5px;
    cursor: pointer;
    opacity: 0.6;
    transition: opacity 0.3s ease, border 0.3s ease;
    border: 1px solid #fff;
}

.thumbnail-nav img.active {
    opacity: 1;
    border: 2px solid #fff;
}

@media screen and (max-width: 767px) {
    .slideshow-container {
        height: 80vh;
        max-height: 410px;
    }

    .thumbnail-nav img {
        width: 40px;
        height: 25px;
        margin: 2px;
    }
}