* { margin: 0; padding: 0; box-sizing: border-box; } @page { size: 148mm 210mm; margin: 10mm 15mm; @bottom-center { content: counter(page); writing-mode: horizontal-tb; } } @page :left { margin-right: 25mm; @top-left { content: env(doc-title); } } @page :right { margin-left: 25mm; } @page :first { counter-reset: chapter; } @page :nth(1) { counter-increment: chapter; } body { break-before: right; counter-reset: section; } html { // writing-mode: vertical-rl; // font-family: '游明朝', 'YuMincho', serif; font-size: 10pt; widows: 1; orphans: 1; text-align: justify; text-spacing: allow-end; hanging-punctuation: allow-end; } ruby > rt { font-size: 0.5rem; } p { line-height: 1.5; text-indent: 1em; } h1 { counter-increment: section; &::before { content: counter(chapter) '.' counter(section) '章 '; } }