.gallery {
    width: calc(40% - 2.5rem);
    -ms-flex-negative: 0;
    flex-shrink: 0;
    text-align: center
}

.gallery .images .image {
    position: relative;
    width: 100%;
    padding-bottom: 100%;
    height: 0;
    overflow: hidden;
    display: none;
    border-radius: 3px;
    box-shadow: 1px 1px 5px rgba(0, 0, 0, .4)
}

.gallery .images .image.active {
    display: block
}

.gallery .images .image .content {
    position: absolute;
    width: 100%;
    height: 100%;
    background: center no-repeat;
    background-size: cover
}

.gallery .thumbs {
    margin-top: 10px;
    display: inline-block;
    width: 100%;
    text-align: center
}

@media (max-width:768px) {
    .gallery .thumbs {
        height: 80px;
        overflow-x: auto;
        overflow-y: hidden
    }
}

.gallery .thumbs .thumb {
    box-sizing: border-box;
    background: center no-repeat;
    background-size: cover;
    display: inline-block;
    position: relative;
    margin: 4px;
    border: 3px solid transparent;
    width: 100px;
    height: 100px;
    cursor: pointer
}

.gallery .thumbs .thumb:before {
    content: '';
    width: 0;
    height: 0;
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    border-bottom: 5px solid transparent;
    position: absolute;
    left: 45px;
    top: -8px
}

@media (max-width:768px) {
    .gallery .thumbs .thumb {
        width: 65px;
        height: 65px
    }
    .gallery .thumbs .thumb:before {
        left: 25px
    }
}

.gallery .thumbs .thumb.active {
    border-color: silver
}

.gallery .thumbs .thumb.active:before {
    border-bottom-color: silver
}