Fix Sankey alignment to better match thumbnail preview #147
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Issue: 21271
Background:
While reviewing the Sankey diagram alignment discussed in the issue,
I explored how vertical centering affects the visual consistency between the example page and its thumbnail preview.
Before sankey:
Full size sankey
sankey-itemstyle (18).html
centered sankey :
centered full size sankey
sankey-itemstyle (19).html
If the Sankey nodes are forced to be exactly centered in the page, it creates two problems:
=> The layout does not match the thumbnail image preview.
=> Visual consistency between the example gallery thumbnail and the opened chart view is lost.
Because of this mismatch, strict page-level centering may not provide the best user experience.
Thumbnail matches sankey:
This update keeps the Sankey alignment behavior that:
=> Matches the thumbnail preview more accurately
=> Maintains visual consistency across the examples gallery
=> Avoids unnecessary forced centering that could break expected layout appearance
Thumbnail according Sankey matches with last one images as u can clear see
For the Sankey example context, this approach provides a more practical and visually aligned result than strict page centering.