Need help to center the 3 images under the title "Sound"

Site URL: https://rolling-pictures.squarespace.com/about-us-copy

Password:RollingPictures

Would also love if someone could help me make the height of the photos smaller within this template grid.

Thank you

Try adding to Design > Custom CSS

/* Sound team */
@media screen and (min-width:992px) {
[data-section-id="62ecae556ad8303a52e480f6"] .gallery-grid-wrapper figure {
    position: relative;
    left: 50%;
}
}