@@ -237,6 +237,26 @@ Background: The W3C Process and CSS</h3>
237237 such as left-to-right (e.g. Latin or Indic),
238238 right-to-left (e.g. Hebrew or Arabic),
239239 bidirectional (e.g. mixed Latin and Arabic) and vertical (e.g. Asian scripts).
240+
241+ <dt> <a href="https://www.w3.org/TR/css-flexbox-1/">CSS Flexible Box Module Level 1</a>
242+ [[!CSS-FLEXBOX-1]]
243+ <dd>
244+ Introduces a flexible linear layout model for CSS.
245+
246+ <dt> <a href="https://www.w3.org/TR/css-variables-1/">CSS Custom Properties for Cascading Variables Module Level 1</a>
247+ [[!CSS-VARIABLES-1]]
248+ <dd>
249+ Introduces cascading variables as a new primitive value type that is accepted by all CSS properties,
250+ and custom properties for defining them.
251+
252+ <dt> <a href="https://www.w3.org/TR/css-grid-1/">CSS Grid Layout Module Level 1</a>
253+ [[!CSS-GRID-1]]
254+ <dd>
255+ Defines a two-dimensional grid-based layout system,
256+ optimized for user interface design.
257+ In the grid layout model, the children of a grid container
258+ can be positioned into arbitrary slots in a predefined flexible or fixed-size layout grid.
259+
240260 </dl>
241261
242262 <div class="note">
@@ -248,32 +268,34 @@ Background: The W3C Process and CSS</h3>
248268 <dt> <a href="https://www.w3.org/TR/css3-transitions/">CSS Transitions Level 1</a>
249269 [[CSS3-TRANSITIONS]]
250270 and <a href="https://www.w3.org/TR/css3-animations/">CSS Animations Level 1</a>
251- [[CSS3-ANIMATIONS]]
271+ [[CSS3-ANIMATIONS]] ,
272+ together with [[CSS-TIMING-1]] .
252273 <dd>
253274 Define mechanisms for transitioning the computed values of CSS properties over time.
254275
255- <dt> <a href="https://www.w3.org/TR/css-flexbox-1/">CSS Flexible Box Module Level 1</a>
256- [[CSS-FLEXBOX-1]]
257- <dd>
258- Introduces a flexible linear layout model for CSS.
259-
260276 <dt> <a href="https://www.w3.org/TR/css3-transforms/">CSS Transforms Level 1</a>
261277 [[CSS3-TRANSFORMS]]
262278 <dd>
263279 Introduces graphical transformations to CSS.
264280
265- <dt> <a href="https://www.w3.org/TR/css-variables-1/">CSS Custom Properties for Cascading Variables Module Level 1</a>
266- [[CSS-VARIABLES-1]]
267- <dd>
268- Introduces cascading variables as a new primitive value type that is accepted by all CSS properties,
269- and custom properties for defining them.
270-
271281 <dt> <a href="https://www.w3.org/TR/css-text-3/">CSS Text Module Level 3</a>
272282 [[CSS-TEXT-3]]
273283 <dd>
274284 Defines properties for text manipulation and specifies their processing model.
275285 It covers line breaking, justification and alignment, white space handling, and text transformation.
276- </dl>
286+
287+ <dt> <a href="https://www.w3.org/TR/css-will-change-1/">CSS Will Change Level 1</a>
288+ [[CSS-WILL-CHANGE-1]]
289+ <dd>
290+ Introduces a performance hint property called 'will-change' .
291+
292+ <dt> <a href="https://www.w3.org/TR/filter-effects-1/">Filter Effects Module Level 1</a>
293+ [[FILTER-EFFECTS-1]]
294+ <dd>
295+ Filter effects are a way of processing an element’s rendering before it is displayed in the document.
296+
297+ </dl>
298+
277299 </div>
278300
279301 <div class="note">
@@ -307,10 +329,6 @@ Background: The W3C Process and CSS</h3>
307329 and adding the ability to specify text emphasis marks
308330 and text shadows.
309331
310- <dt> <a href="https://www.w3.org/TR/css-will-change-1/">CSS Will Change Level 1</a>
311- [[CSS-WILL-CHANGE-1]]
312- <dd>
313- Introduces a performance hint property called 'will-change' .
314332 </dl>
315333
316334 <dt> <a href="https://www.w3.org/TR/css3-speech/">CSS Speech Module Level 1</a>
@@ -326,24 +344,35 @@ Background: The W3C Process and CSS</h3>
326344 within their containers in the various CSS box layout models:
327345 block layout, table layout, flex layout, and grid layout.
328346
329- <dt> <a href="https://www.w3.org/TR/css-grid-1 /">CSS Grid Layout Module Level 1 </a>
330- [[CSS-GRID-1 ]]
347+ <dt> <a href="https://www.w3.org/TR/css-break-3 /">CSS Fragmentation Module Level 3 </a>
348+ [[CSS-BREAK-3 ]]
331349 <dd>
332- Defines a two-dimensional grid-based layout system,
333- optimized for user interface design.
334- In the grid layout model, the children of a grid container
335- can be positioned into arbitrary slots in a predefined flexible or fixed-size layout grid.
350+ Describes the fragmentation model that partitions a flow into pages, columns, or regions.
336351
337- <dt> <a href="https://www.w3.org/TR/filter-effects -1/">Filter Effects Module Level 1</a>
338- [[FILTER-EFFECTS -1]]
352+ <dt> <a href="https://www.w3.org/TR/css-contain -1/">CSS Containment Module Level 1</a>
353+ [[CSS-CONTAIN -1]]
339354 <dd>
340- Filter effects are a way of processing an element’s rendering before it is displayed in the document.
355+ Describes the 'contain' property,
356+ which indicates that the element’s subtree is independent of the rest of the page.
357+ This enables heavy optimizations by user agents when used well.
341358
342- <dt> <a href="https://www.w3.org/TR/css-break-3 /">CSS Fragmentation Module Level 3 </a>
343- [[CSS-BREAK-3 ]]
359+ <dt> <a href="https://www.w3.org/TR/css-scroll-snap-1 /">CSS Scroll Snap Module Level 1 </a>
360+ [[CSS-SCROLL-SNAP-1 ]]
344361 <dd>
345- Describes the fragmentation model that partitions a flow into pages, columns, or regions .
362+ Contains features to control panning and scrolling behavior with “snap positions” .
346363
364+ <dt> <a href="https://www.w3.org/TR/mediaqueries-4/">Media Queries Level 4</a>
365+ [[MEDIAQUERIES-4]]
366+ <dd>
367+ Extends and supersedes [[CSS3-MEDIAQUERIES]] , expanding the syntax, deprecating most media types,
368+ and introducing new media features.
369+
370+ <dt> <a href="https://www.w3.org/TR/css-cascade-4/">CSS Cascading and Inheritance Level 4</a>
371+ [[CSS-CASCADE-4]]
372+ <dd>
373+ Extends and supersedes [[CSS-CASCADE-3]] ,
374+ describing how to collate style rules and assign values to all properties on all elements.
375+ By way of cascading and inheritance, values are propagated for all properties on all elements.
347376 </dl>
348377
349378 We hope to incorporate them into a future snapshot.
@@ -659,10 +688,12 @@ Preserving the Openness of CSS</h5>
659688 css-syntax-3,
660689 css-style-attr-1,
661690 mediaqueries-3,
691+ mediaqueries-4,
662692 css-conditional-3,
663693 css-namespaces-3,
664694 selectors-3,
665695 css-cascade-3,
696+ css-cascade-3,
666697 css-values-3,
667698 css-color-3,
668699 css-backgrounds-3,
@@ -674,6 +705,7 @@ Preserving the Openness of CSS</h5>
674705 css-writing-modes-3,
675706 css-transitions-1,
676707 css-animations-1,
708+ css-timing-1,
677709 css-flexbox-1,
678710 css-transforms-1,
679711 css-variables-1,
@@ -687,7 +719,9 @@ Preserving the Openness of CSS</h5>
687719 css-align-3,
688720 css-grid-1,
689721 filter-effects-1,
690- css-break-3"></index>
722+ css-break-3,
723+ css-contain-1,
724+ css-scroll-snap-1"></index>
691725
692726<h3 id="selectors">Selector Index</h3>
693727
@@ -696,10 +730,12 @@ Preserving the Openness of CSS</h5>
696730 css-syntax-3,
697731 css-style-attr-1,
698732 mediaqueries-3,
733+ mediaqueries-4,
699734 css-conditional-3,
700735 css-namespaces-3,
701736 selectors-3,
702737 css-cascade-3,
738+ css-cascade-3,
703739 css-values-3,
704740 css-color-3,
705741 css-backgrounds-3,
@@ -711,6 +747,7 @@ Preserving the Openness of CSS</h5>
711747 css-writing-modes-3,
712748 css-transitions-1,
713749 css-animations-1,
750+ css-timing-1,
714751 css-flexbox-1,
715752 css-transforms-1,
716753 css-variables-1,
@@ -724,7 +761,9 @@ Preserving the Openness of CSS</h5>
724761 css-align-3,
725762 css-grid-1,
726763 filter-effects-1,
727- css-break-3"></index>
764+ css-break-3,
765+ css-contain-1,
766+ css-scroll-snap-1"></index>
728767
729768<h3 id="at-rules">
730769At-Rule Index</h3>
@@ -734,10 +773,12 @@ At-Rule Index</h3>
734773 css-syntax-3,
735774 css-style-attr-1,
736775 mediaqueries-3,
776+ mediaqueries-4,
737777 css-conditional-3,
738778 css-namespaces-3,
739779 selectors-3,
740780 css-cascade-3,
781+ css-cascade-3,
741782 css-values-3,
742783 css-color-3,
743784 css-backgrounds-3,
@@ -749,6 +790,7 @@ At-Rule Index</h3>
749790 css-writing-modes-3,
750791 css-transitions-1,
751792 css-animations-1,
793+ css-timing-1,
752794 css-flexbox-1,
753795 css-transforms-1,
754796 css-variables-1,
@@ -762,7 +804,9 @@ At-Rule Index</h3>
762804 css-align-3,
763805 css-grid-1,
764806 filter-effects-1,
765- css-break-3"></index>
807+ css-break-3,
808+ css-contain-1,
809+ css-scroll-snap-1"></index>
766810
767811<h3 id="properties">Property Index</h3>
768812
@@ -771,10 +815,12 @@ At-Rule Index</h3>
771815 css-syntax-3,
772816 css-style-attr-1,
773817 mediaqueries-3,
818+ mediaqueries-4,
774819 css-conditional-3,
775820 css-namespaces-3,
776821 selectors-3,
777822 css-cascade-3,
823+ css-cascade-3,
778824 css-values-3,
779825 css-color-3,
780826 css-backgrounds-3,
@@ -786,6 +832,7 @@ At-Rule Index</h3>
786832 css-writing-modes-3,
787833 css-transitions-1,
788834 css-animations-1,
835+ css-timing-1,
789836 css-flexbox-1,
790837 css-transforms-1,
791838 css-variables-1,
@@ -799,7 +846,9 @@ At-Rule Index</h3>
799846 css-align-3,
800847 css-grid-1,
801848 filter-effects-1,
802- css-break-3"></index>
849+ css-break-3,
850+ css-contain-1,
851+ css-scroll-snap-1"></index>
803852
804853<h3 id="values">Values Index</h3>
805854
@@ -808,10 +857,12 @@ At-Rule Index</h3>
808857 css-syntax-3,
809858 css-style-attr-1,
810859 mediaqueries-3,
860+ mediaqueries-4,
811861 css-conditional-3,
812862 css-namespaces-3,
813863 selectors-3,
814864 css-cascade-3,
865+ css-cascade-3,
815866 css-values-3,
816867 css-color-3,
817868 css-backgrounds-3,
@@ -823,6 +874,7 @@ At-Rule Index</h3>
823874 css-writing-modes-3,
824875 css-transitions-1,
825876 css-animations-1,
877+ css-timing-1,
826878 css-flexbox-1,
827879 css-transforms-1,
828880 css-variables-1,
@@ -836,7 +888,9 @@ At-Rule Index</h3>
836888 css-align-3,
837889 css-grid-1,
838890 filter-effects-1,
839- css-break-3"></index>
891+ css-break-3,
892+ css-contain-1,
893+ css-scroll-snap-1"></index>
840894
841895Acknowledgements {#acks}
842896========================
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