This section documents problems found in the CSS specs and working drafts. Problems documented here will be addressed by the editors, possibly after discussion in a CSS Working Group meeting, and will result in changes, corrections, clarifications, or no change.

The group uses github for issue tracking, in csswg-drafts, fxtf-drafts, css-houdini-drafts, but some old issues are stored in Bugzilla or Tracker.

The Status page tracks outstanding resolutions. Please clear them out when you're done dealing with the resolution.

• W3C Mercurial For Dummies — reading/writing to the spec repositories
• GitHub Workflow for editors and other contributors
• Bikeshed — generating Overview.html from Overview.bs (auto-generating section numbers, indices, cross-links, and other mundane things). (Or here's a guide for the older processor.)
• CSS Module Template — for starting new specs (and formatting old ones)
• Meta-Update Status — for updating existing specs to our latest “specs should include”
• Step-by-step Publishing a CSS Spec — getting your spec on www.w3.org
• Wide Review — ensuring wide review of a spec before CR
• Issue Tracking and Resolution — raising your newborn draft into a grown-up spec
• Process suggestions for advancing a spec — guidelines for when to advance your spec to the next stage
• Test status information on spec — adding information about testing status on the spec
• Specification levels – which levels to publish each spec as
• Maintaining RECs – proposed process for adding substantive changes to RECs

• Marking up your <dfn>s for proper cross-linking
• CSSOM Constants
• Patterns for writing "Computed Value" lines
• Patterns for writing at-rules
• Property dependencies in computed values
• Specifying Percentages in the Age of Calc()
• Patterns for writing CSSOM APIs
• Specifying Limited Ranges in Properties and Elsewhere
• Writing Asynchronous Algorithms
• Using Promises in Specifications

• EPub Stuff
• Western Layout Requirements, outlining the advanced printing stuff that XSL-FO does and which we'd like to address in CSS
• Incubation considerations

See Current Work Tables for current status. These pages are just scratch space for the editors to track ideas.

• CSS Level 2 Revision 1 - Archived / Not active
• CSS level 2 Revision 2
• CSS Color Module Level 3
• Selectors Level 3
• CSS Multi-Column Layout Module Level 3
• Media Queries Level 3
• CSS Style Attributes
• CSS Backgrounds and Borders Module Level 3
• CSS Basic User Interface Module Level 3
• CSS Images Level 3
• CSS Transforms Level 3
• CSS Transitions Level 3
• CSS Animations Level 3
• CSSOM - CSS Object Module
• CSS Flexbox Module
• CSS Lists Module Level 3
• CSS Regions Module Level 3
• CSS3 Ruby Module (out of date CR, back to WD for major revisions)
• CSS Text Module Level 3
• CSS Values and Units Module Level 3
• CSS Writing Modes Level 3
• CSS Speech Module Level 3
• CSS Grid Layout
• CSS Exclusions
• CSS Shapes
• CSS Round Display
• CSS Backgrounds and Borders Level 4
• CSS Pseudo Elements Level 4 (collecting features and ideas)
• CSS Color Level 4 (collecting features and ideas)
• CSS User Interface Module Level 4 (collecting features and ideas)
• CSS vendor prefixes (collecting thoughts about policy/guidance on usage, dropping etc.)
• CSS Paged Media Level 4 (or CSS Pagination, or CSS Fragmentation)
• Paged View (use cases for paged view and page layout)
• Text Level 4 (why isn't this “css4-text”?) (can't we just move this to “css4-text”?)
• Selectors Level Next
• CSS Overflow Level 3
• Box-model-related features with no home
• CSS Positioning
• Media Queries Level 4
• CSS Cascading and Inheritance Level 3
• CSS4 Values and Units
• CSS Fragmentation Module Level 3
• Pages related to content fragmentation, regions, exclusions, paged views etc:
  • paged view
  • page specs
  • regions
  • exclusions
  • region templates
  • fragments columns regions pages
• Font Load Events
• CSS Regions Module Level 4
• CSS Flexbox Level 2
• CSS UI Level 4
• Grid Layout Level 2 Ideas
• CSS Ruby Level 2
• CSS Box Module Level 3
• CSS Generated Content Module Level 3

Tracking CSSWG members' comments on related specs not published by our group.

• SVG Tiny 1.2
• HTML5