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  1. CSS Variables

    Introduces cascading variables as a new primitive value type that is accepted by all CSS properties, and custom properties for defining them.

    Spec: http://www.w3.org/TR/css-variables/

    5,313 votes
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      51 comments  ·  CSS  ·  Flag idea as inappropriate…  ·  Admin →
    • position: sticky

      position: sticky is a new way to position elements and is conceptually similar to position: fixed. The difference is that a stickily positioned element behaves like position: relative within its parent, until a given offset threshold is met.

      Spec: http://dev.w3.org/csswg/css-position/#sticky-pos

      3,540 votes
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        5 comments  ·  CSS  ·  Flag idea as inappropriate…  ·  Admin →
      • object-fit and object-position

        CSS properties that control the position and size of replaced content within the content box.

        http://dev.w3.org/csswg/css-images-3/#the-object-fit

        3,320 votes
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          67 comments  ·  CSS  ·  Flag idea as inappropriate…  ·  Admin →
        • Update CSS Grid

          Update the IE implementation of Grid Layout to match the current spec. The current implementation from the IE 10 days is outdated.

          1,420 votes
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            27 comments  ·  CSS  ·  Flag idea as inappropriate…  ·  Admin →
          • CSS attr() as defined in CSS Values Level 3

            Allows attr() to be used in any CSS rule (not just generated content), any CSS property (not just content) and for various data types.

            Spec: http://www.w3.org/TR/css3-values/#attr-notation

            This will revolutionize what we can do with CSS and enable a kind of decoupling between content and styling that has never been possible before.

            1,333 votes
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              5 comments  ·  CSS  ·  Flag idea as inappropriate…  ·  Admin →
            • CSS Masking

              Allows hiding of portions of a visible elements.

              Spec: https://dvcs.w3.org/hg/FXTF/raw-file/tip/css-masking-1/index.html

              1,176 votes
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                8 comments  ·  CSS  ·  Flag idea as inappropriate…  ·  Admin →
              • 1,100 votes
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                  4 comments  ·  CSS  ·  Flag idea as inappropriate…  ·  Admin →
                • Box Alignment

                  CSS properties for aligning boxes within their container. Allows for true vertical centering among other features.

                  http://dev.w3.org/csswg/css3-align/

                  979 votes
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                    2 comments  ·  CSS  ·  Flag idea as inappropriate…  ·  Admin →
                  • :has()

                    https://drafts.csswg.org/selectors/#relational

                    The relational pseudo-class, ‘:has()#’, is a functional pseudo-class taking a relative selector list as an argument. It represents an element if any of the relative selectors, when absolutized and evaluated with the element as the :scope elements, would match at least one element.

                    827 votes
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                      3 comments  ·  CSS  ·  Flag idea as inappropriate…  ·  Admin →
                    • Shapes

                      Define arbitrary shapes inside and around which inline content can flow.

                      http://dev.w3.org/csswg/css-shapes/

                      810 votes
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                        4 comments  ·  CSS  ·  Flag idea as inappropriate…  ·  Admin →
                      • Add Support for Scrollbar Styling

                        Add support for scrollbar styling, similar to the earlier properties supported in Internet Explorer (i.e. scrollbar-base-color, etc)

                        771 votes
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                          16 comments  ·  CSS  ·  Flag idea as inappropriate…  ·  Admin →
                        • CSS "Will Change"

                          Adds a will-change CSS property, that can be used to signal that a particular property is likely to be changed in the future, or that an element's content is likely to change.

                          Proposal: http://tabatkins.github.io/specs/css-will-change/

                          678 votes
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                            8 comments  ·  CSS  ·  Flag idea as inappropriate…  ·  Admin →
                          • 622 votes
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                              13 comments  ·  CSS  ·  Flag idea as inappropriate…  ·  Admin →
                            • background-blend-mode

                              Provides a way to blend background images, colors, and gradients together.

                              619 votes
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                                2 comments  ·  CSS  ·  Flag idea as inappropriate…  ·  Admin →
                              • Implement conic gradients from CSS Image Values Level 4

                                Conic gradients [1] are useful for a number of effects on the Web that cannot be emulated in any other way (see [2]). They can be implemented in many graphics libraries today (e.g. Cairo) via mesh gradients. Please implement them.

                                [1]: http://www.w3.org/TR/css4-images/#conic-gradients
                                [2]: http://leaverou.github.io/conic-gradient

                                589 votes
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                                  13 comments  ·  CSS  ·  Flag idea as inappropriate…  ·  Admin →
                                • Support CSS Motion Path Module

                                  Since SMIL will be deprecated in Blink and there is no intent to implement in MS Edge, we need to fill in the gaps and provide alternative ways to do with CSS what we could do in SMIL.

                                  The CSS Motion Path spec is now a Level 1 module and is in W3C Working Draft status:: http://www.w3.org/TR/2015/WD-motion-1-20150409/

                                  Using the properties defined in this specification, we will be able to animate HTML and SVG elements along arbitrary paths, using nothing but good old CSS.

                                  There is a bug report open to fixes in Blink, hopefully to make it to implementation this…

                                  567 votes
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                                    5 comments  ·  CSS  ·  Flag idea as inappropriate…  ·  Admin →
                                  • image-rendering: pixelated

                                    This declaration is used to preserve pixels when scaling up images (e.g. pixel art). IE provides this functionality via -ms-interpolation-mode: nearest-neighbor. The other browser engines also provide this functionality (see here: http://www.simevidas.com/2015/05/10/Blowing-up-pixel-art-on-the-Web.html).

                                    544 votes
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                                      5 comments  ·  CSS  ·  Flag idea as inappropriate…  ·  Admin →
                                    • Add CSS transforms on SVG elements

                                      I created a CSS-based grid system for my SVG sprite sheet using transforms, only to revert to transform attributes after it collapsed in IE9+.
                                      Please add support for CSS transformation in SVG.

                                      510 votes
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                                        0 comments  ·  CSS  ·  Flag idea as inappropriate…  ·  Admin →
                                      • 504 votes
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                                          14 comments  ·  CSS  ·  Flag idea as inappropriate…  ·  Admin →
                                        • CSS Intrinsic Sizing

                                          Extends the CSS sizing properties with keywords that represent content-based "intrinsic" sizes and context-based "extrinsic" sizes, allowing CSS to more easily describe boxes that fit their content or fit into a particular layout context.

                                          http://dev.w3.org/csswg/css3-sizing/

                                          408 votes
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                                            6 comments  ·  CSS  ·  Flag idea as inappropriate…  ·  Admin →
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