.artGallery [data-controls] {
    padding: 10px 12px;
}

.artGallery [data-tns-role="controls"] {
    text-align: center;
}

.artGallery img {
    display: block;
    margin: 1.5em auto;
    width: auto;
    max-width: 100%;
    height: auto;
    max-height: 450px;
}

@media screen and (min-width: 768px) {
    .artGallery img {
        max-width: 750px;
    }
}

.artGallery [data-tns-role="nav"] {
    text-align: center;
}

.artGallery button[data-nav] {
    width: 12px;
    height: 12px;
    margin: 0 5px;
    border-radius: 50%;
    background: #6B6B6B;
    opacity: .5;
}

.artGallery button[data-nav]:hover,
.artGallery button[aria-selected="true"]{
    opacity: 1;
}