Adding a border to images in gallery

On 10/16/2021 at 9:40 AM, JohnCabal said:

Site URL: https://ewgarts.com

Sorry, I know similar questions have been asked here before, but  the CSS code I've tried either does nothing, or doesn't produce the desired effect. I want to place a border around each image in my portfolio, say 3px, but not the captions. In the screenshot below, I show a CSS sample that only puts a border on the left and top - so is something getting clipped or overlayed?

Add to Design > Custom CSS

body.homepage .gallery-masonry .gallery-masonry-item-wrapper {
    border: 3px solid red;
}