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  feat: Add percentage support to CSS properties (#738)

  bot released this 2026-02-08 21:32:45 +00:00 | 689 commits to develop since this release

  Summary

  • Closes #730

  What is the goal of this PR?

  • Adds percentage-based value support to CSS properties that accept
    percentages (padding, margin, text-indent)

  What changes are included?

  • Adds Percent as another CSS unit
  • Passes the viewport width to fromCssStyle so that we can resolve
    percentage-based values
  • Adds a fallback of using an emspace for text-indent if we have an
    unresolvable value for whatever reason

  Additional Context

  • This was missed in my CSS support feature, and the fallback when we
    encounter a percentage value is to use px instead. This means 5% (which
    would be ~30px on the screen) turns into 5px. When percentages are used
    in text-indent, this fallback behavior makes the indent look like a
    single space character. Whoops! 😬

  My test EPUB has been updated
  here with percentage based
  CSS values at the end of the book.

  ---

  AI Usage

  While CrossPoint doesn't have restrictions on AI tools in contributing,
  please be transparent about their usage as it
  helps set the right context for reviewers.

  Did you use AI tools to help write this code? YES, Claude Code

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