Images in gallery with radius 24 0 24 0 px

Hi,

I've inserted an image gallery into the text column.

[gallery columns="2" link="file" size="medium" ids="341, 342, 343, 344"]

Since I've always used a photo radius of 24 0 24 0 px on all pages, I'd like to know how I can add a radius to the images in the gallery as well.

https://pixelway.de/olyschlaeger_2025/filialen/

Thanks