.gallery-content {
    margin: 0 auto 70px auto;
}

.gallery-main {
    /*height: 220px;*/
    height: auto;
    margin: 0 auto;
    max-width: 770px;
    width: 100%;
}

.gallery-main .slick-slide {
    height: auto;
    /*height: 100%;
    object-fit: cover;
    object-position: center;
    width: 100%;*/
}

.gallery-preview {
    height: 50px;
    margin: 25px 0 0 0;
}

.gallery-preview .slick-slide {
    height: 100%;
    margin: 0 8px 0 8px;
    object-fit: cover;
}

.gallery-preview .slick-prev {
    left: 5px;
}

.gallery-preview .slick-next {
    right: 5px;
}

.gallery-preview .slick-next, 
.gallery-preview .slick-prev{
    height: 30px;
    z-index: 1;
}

.gallery-preview .slick-next:before {
    background: url(https://cu.epm.com.co/Portals/institucional/Skins/institucional/img/arrow-right-gallery.svg);
    background-repeat: no-repeat;
    background-size: auto;
    background-position: center;
    content: "";
    display: block;
    height: 30px;
    opacity: 1;
    width: 20px;
}

.gallery-preview .slick-prev:before {
    background: url(https://cu.epm.com.co/Portals/institucional/Skins/institucional/img/arrow-left-gallery.svg);
    background-repeat: no-repeat;
    background-size: auto;
    background-position: center;
    content: "";
    display: block;
    height: 30px;
    opacity: 1;
    width: 20px;
}


@media(min-width: 768px){
    /*.gallery-main {
        height: 375px;
    }*/
    
    .gallery-preview {
        height: 85px;
    }
    
    .gallery-preview .slick-slide {
        margin: 0 15px 0 15px;
    }
    
}

.bstrap30 button.slick-arrow {
    font-size: 0;
}