[css-align] Switch all CSS2.1 references to CSS2 references.

Author: fantasai

css-align/Overview.bs

@@ -61,10 +61,10 @@ Introduction</h2>
 Module interactions</h3>
 
 	This module adds some new alignment capabilities
-	to the block layout model described in [[!CSS21]] chapters 9 and 10
+	to the block layout model described in [[!CSS2]] chapters 9 and 10
 	and defines the interaction of these properties
 	with the alignment of table cell content using 'vertical-align',
-	as defined in [[!CSS21]] chapter 17.
+	as defined in [[!CSS2]] chapter 17.
 
 	The interaction of these properties with
 	Grid Layout [[!CSS-GRID-1]]
@@ -79,8 +79,8 @@ Module interactions</h3>
 <h3 id="values">
 Values</h3>
 
-	This specification follows the <a href="https://www.w3.org/TR/CSS21/about.html#property-defs">CSS property definition conventions</a> from [[!CSS21]].
-	Value types not defined in this specification are defined in CSS Level 2 Revision 1 [[!CSS21]].
+	This specification follows the <a href="https://www.w3.org/TR/CSS21/about.html#property-defs">CSS property definition conventions</a> from [[!CSS2]].
+	Value types not defined in this specification are defined in CSS Level 2 Revision 1 [[!CSS2]].
 	Other CSS modules may expand the definitions of these value types:
 	for example [[CSS3VAL]], when combined with this module,
 	adds the ''initial'' keyword as a possible property value.
@@ -659,7 +659,7 @@ Details per Layout Mode {#distribution-details}
 				''vertical-align/middle'' makes it behave as ''center'',
 				''vertical-align/bottom'' makes it behave as ''end'',
 				and all other values make it behave as ''baseline''.
-				[[!CSS21]]
+				[[!CSS2]]
 
 				''justify-content/normal'' otherwise behaves as ''start''.
 	</table>
@@ -949,7 +949,7 @@ Inline/Main-Axis Alignment: the 'justify-self' property</h3>
 		<tr>
 			<th>Other Details
 			<td>
-				In terms of CSS2.1 block-level formatting [[!CSS21]],
+				In terms of CSS2.1 block-level formatting [[!CSS2]],
 				the rules for “over-constrained” computations in <a href="https://www.w3.org/TR/CSS21/visudet.html#blockwidth">section 10.3.3</a>
 				are ignored in favor of alignment as specified here
 				and the used value of the offset properties are not adjusted to correct for the over-constraint.
@@ -1000,7 +1000,7 @@ Inline/Main-Axis Alignment: the 'justify-self' property</h3>
 		<tr>
 			<th>Other Details
 			<td>
-				In terms of CSS2.1 formatting [[!CSS21]],
+				In terms of CSS2.1 formatting [[!CSS2]],
 				the rules for “over-constrained” computations in <a href="https://www.w3.org/TR/CSS21/visudet.html#abs-non-replaced-width">section 10.3.7</a>
 				are ignored in favor of alignment as specified here,
 				and the used value of the offset properties are not adjusted to correct for the over-constraint.
@@ -1148,7 +1148,7 @@ Block/Cross-Axis Alignment: the 'align-self' property</h3>
 		<tr>
 			<th>Other Details
 			<td>
-				In terms of CSS2.1 formatting [[!CSS21]],
+				In terms of CSS2.1 formatting [[!CSS2]],
 				the rules for "over-constrained" computations in <a href="https://www.w3.org/TR/CSS21/visudet.html#abs-non-replaced-height">section 10.6.4</a>
 				are ignored in favor of alignment as specified here
 				and the used value of the offset properties are not adjusted to correct for the over-constraint.
@@ -1475,7 +1475,7 @@ Determining the Baselines of a Box</h2>
 
 			When finding the baselines of an inline-block,
 			any baselines contributed by table boxes must be skipped.
-			(This quirk is a legacy behavior from [[CSS21]].)
+			(This quirk is a legacy behavior from [[CSS2]].)
 
 			The first (last) block-axis baselines of a table box are the first (last) baselines of its first (last) column.
 
@@ -1488,7 +1488,7 @@ Determining the Baselines of a Box</h2>
 			after alignment has been performed.
 			Otherwise, the first (last) inline-axis baselines of the row
 			are <a>synthesized</a> from the lowest and highest content edges of the cells in the row.
-			[[!CSS21]]
+			[[!CSS2]]
 
 			A table row has no block-axis baselines.
 
@@ -1502,7 +1502,7 @@ Determining the Baselines of a Box</h2>
 			after alignment has been performed.
 			Otherwise, the first (last) inline-axis baselines of the row
 			are <a>synthesized</a> from the extreme content edges of the cells in the row.
-			[[!CSS21]]
+			[[!CSS2]]
 
 			A table column has no inline-axis baselines.