Positioning thumbnails over slides (7.0, 7.1 CE & 7.1 FE) - Gallery Block Slideshow
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If you like the style of Squarespace’s Gallery Slideshow but want to make it look less template-y, this snippet can help you out!
It’ll allow you to move the native thumbnails over the slides, instead of keeping them underneath, and add either a solid or slightly transparent background to the area to change up the look of the block in a heartbeat.