.section-image-gallery {
    text-align: center;
    width: 100%;
    margin: 40px 0;
    border-top: double 10px #eee;
    background-color: #eee;
    padding-bottom: 10px;
}

.img-wrapper {
    position: relative;
    margin-top: 15px;
    width: 100%;
    height: 100%;
}

    .img-wrapper img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        max-height: 240px;
    }

.img-overlay {
    background: rgba(0, 0, 0, 0.7);
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
}

    .img-overlay i {
        color: #fff;
        font-size: 3em;
    }

#overlay {
    background: rgba(0, 0, 0, 0.7);
    width: 100%;
    height: 100%;
    position: fixed;
    top: 0;
    left: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 999;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

    #overlay img {
        margin: 0;
        width: 80%;
        height: auto;
        -o-object-fit: contain;
        object-fit: contain;
        padding: 5%;
    }

@media screen and (min-width: 768px) {
    #overlay img {
        width: 60%;
    }
}

@media screen and (min-width: 1200px) {
    #overlay img {
        width: 50%;
    }
}

#nextButton {
    color: #fff;
    font-size: 2em;
    transition: opacity 0.8s;
}

    #nextButton:hover {
        opacity: 0.7;
    }

@media screen and (min-width: 768px) {
    #nextButton {
        font-size: 3em;
    }
}

#prevButton {
    color: #fff;
    font-size: 2em;
    transition: opacity 0.8s;
}

    #prevButton:hover {
        opacity: 0.7;
    }

@media screen and (min-width: 768px) {
    #prevButton {
        font-size: 3em;
    }
}

#exitButton {
    color: #fff;
    font-size: 2em;
    transition: opacity 0.8s;
    position: absolute;
    top: 15px;
    right: 15px;
}

    #exitButton:hover {
        opacity: 0.7;
    }

@media screen and (min-width: 768px) {
    #exitButton {
        font-size: 3em;
    }
}