horizontal gallery with title below images in 2 row

Hey fabioque,
Try this CSS in your Enfold Theme Options ▸ General Styling ▸ Quick CSS field:

#top .av-horizontal-gallery-wrap .text-under-image {
    width: 400px;
    word-break: break-word;
    overflow-wrap: break-word;
    white-space: break-spaces;
}

adjust the width “400px” to a width that will be good for your items, you have some items smaller than 400px but this seems to work for most of your items. You can’t use a percentage so it needs to be a fixed width.
After applying the css, please clear your browser cache and check.

Best regards,
Mike