.presentation-content {
    width: 100%;
    height: 100%;
    position: absolute;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    opacity: 0;
    z-index: -1;
    -webkit-transition: 0.4s all;
    -moz-transition: 0.4s all;
    transition: 0.4s all;
    padding: 20px;
}

.presentation-main {
    position: relative;
    z-index: 500;
    transition: 0.4s all;
    -webkit-transition: 0.4s all;
    -moz-transition: 0.4s all;
}

.presentation-main:hover {
    transform: scale(1.02);
}

.presentation-main:hover .presentation-content {
    opacity: 1;
    z-index: 50;
}

.presentation-name {
    font-size: 24px;
    color: #FFFFFF;
    font-family: "RobotoCondensed-Bold";
    font-weight: 700;
    font-style: normal;
    text-align: center;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -moz-box;
    -moz-box-orient: vertical;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    line-clamp: 3;
    box-orient: vertical;
}

.presentation-buttons-group {
    margin-top: 40px;
}

.download-button {
    width: 47px;
    height: 47px;
    border-radius: 50%;
    background-color: #fff;
    outline: none;
    border: none;
    margin-top: 15px;
}

.presentation-buttons-group > button:last-child {
    margin-top: 15px;
}

.video-iframe {
    height: 195px;
}

@media (max-width: 1559px) {
    .presentation-name {
        font-size: 20px;
    }
}

@media (max-width: 1024px) {
    .presentation-name {
        font-size: 22px;
    }

    .presentation-buttons-group {
        margin-top: 30px;
    }

    .download-button {
        width: 42px;
        height: 42px;
    }
}

@media (max-width: 767px) {
    .presentation-buttons-group {
        margin-top: 18px;
    }
}

@media (max-width: 575px) {
    .presentation-name {
        font-size: 16px;
    }
}

@media (max-width: 374px) {
    .presentation-name {
        font-size: 15px;
    }
}

.seminar-date {
    color: #252A37;
    font-size: 15px;
    margin-top: 8px;
}

.item > img {
    transition: 0.5s all;
    -webkit-transition: 0.5s all;
    -moz-transition: 0.5s all;
}

.item {
    overflow: hidden;
}

.item:hover img {
    transform: scale(1.07);
}

.green-button > span {
    font-family: "RobotoCondensed-Italic";
    font-weight: 400;
    font-style: italic;
}

.videos-container {
    transform: translateY(100px);
    opacity: 0;
    transition: 1s all;
    -webkit-transition: 1s all;
    -moz-transition: 1s all;
}