/* Page size: B5 (ISO, 176 x 250 mm) — the book trim this engine was built for. Link AFTER engine/sheet.css and set . The CSS keyword `B5` is ISO B5 per spec (not JIS B5, which is 182 x 257 mm). @page is restated here because a print stylesheet takes the LAST @page size it sees: linking a size file after sheet.css is what makes the switch real. Adding another trim is one file like this one plus data-size on the page. */ html[data-size="b5"]{ --page-w:176mm; --page-h:250mm; --page-pad:14mm; } @media print{ @page{ size:B5; margin:0; } }