The different ways you can set sizing and layout options for the page gallery (orientation and columns vs. height and width, WTF does gutterSize even mean anymore...) are adding a lot of complexity, and aren't really useful when working with galleries across multiple devices. Consider simplifying this to have a "small, medium, large" + orientation approach, with default definitions of what those sizes are for different device sizes; then simplify/flatten the HTML and CSS structure so that it's easy to override via custom CSS snippets if desired.
The different ways you can set sizing and layout options for the page gallery (
orientationandcolumnsvs.heightandwidth, WTF doesgutterSizeeven mean anymore...) are adding a lot of complexity, and aren't really useful when working with galleries across multiple devices. Consider simplifying this to have a "small, medium, large" + orientation approach, with default definitions of what those sizes are for different device sizes; then simplify/flatten the HTML and CSS structure so that it's easy to override via custom CSS snippets if desired.