Hello,

If you set “0” in space you will not have any gap. Click the drop-down list and choose the value.

Image size: Enter image size. Example: “thumbnail”, “medium”, “large”, “full” or other sizes defined by current theme. Alternatively enter image size in pixels: 200×100 (Width x Height). Leave empty to use “thumbnail” size.

Our demo uses “full”

Image gallery does not have any hover effect option.

Best Regards