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writing-mode specified on the body element should not be inherited by the page context #1122

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MurakamiShinyu opened this issue Feb 3, 2023 · 0 comments
Open

writing-mode specified on the body element should not be inherited by the page context #1122

MurakamiShinyu opened this issue Feb 3, 2023 · 0 comments
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bug spec conformance

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@MurakamiShinyu
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The writing-mode specified on the body element should not be inherited by the page context.

See the spec: https://www.w3.org/TR/css-writing-modes-3/#principal-flow

Test case:

<!doctype html>
<html lang="ja">
  <head>
    <style>
      @page {
        @top-center {
          content: "ここは横書きのはず";
        }
      }
      body {
        writing-mode: vertical-rl;
      }
    </style>
  </head>
  <body>
    <h1>ここは縦書き</h1>
    <p>body要素に指定されたwriting-modeプロパティはルート要素に指定された場合と異なり、ページコンテキスト（@pageルール内）に継承されるべきではない。</p>
  </body>
</html>

GitHub Gist: https://gist.github.com/MurakamiShinyu/000f3e5b0900b480e7aecd0cdfa82879

Test with Vivliostyle Viewer:
https://vivliostyle.vercel.app/#src=https://gist.github.com/MurakamiShinyu/000f3e5b0900b480e7aecd0cdfa82879

Result screenshot:
Screenshot 2023-02-03 at 15 00 38
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@MurakamiShinyu