I'm looking to adjust the layout so that each image occupies 50% of the page. Currently, one large image takes up 2/3 of the space and two smaller images take up the remaining 1/3.
You can find the images here:
To make the large image occupy 50%, you can use this CSS code:
.tweak-index-gallery-layout-packed [data-index-gallery-images='3']
.Index-gallery-item:nth-child(3n+1) {
width: 50%;}
However, I'm unsure how to adjust the smaller images to fill the remaining space after resizing the large image.