[css-align] Drop align-self/content: left | right per WG resolution. (justify-* keeps them) #1403

Author: fantasai

css-align/Overview.bs

@@ -330,15 +330,15 @@ Positional Alignment: the ''center'', ''start'', ''end'', ''self-start'', ''self
 			(to specify default values for 'justify-self' and 'align-self').
 			<pre class='prod'>
 				<dfn>&lt;self-position></dfn> = center | start | end | self-start | self-end |
-								flex-start | flex-end | left | right;
+								flex-start | flex-end;
 			</pre>
 		<dt><<content-position>>
 		<dd>
 			This set is used by 'justify-content' and 'align-content'
 			to align the box's contents within itself.
 
 			<pre class='prod'>
-				<dfn>&lt;content-position></dfn> = center | start | end | flex-start | flex-end | left | right;
+				<dfn>&lt;content-position></dfn> = center | start | end | flex-start | flex-end;
 			</pre>
 	</dl>
 
@@ -651,7 +651,7 @@ The 'justify-content' And 'align-content' Properties</h3>
 
 	<pre class="propdef">
 	Name: align-content
-	Value: normal | <<baseline-position>> |  <<content-distribution>> | [ <<overflow-position>>? <<content-position>> ]
+	Value: normal | <<baseline-position>> |  <<content-distribution>> | <<overflow-position>>? <<content-position>>
 	Initial: normal
 	Applies to: block containers, multicol containers, flex containers, and grid containers
 	Inherited: no
@@ -663,7 +663,7 @@ The 'justify-content' And 'align-content' Properties</h3>
 
 	<pre class="propdef">
 	Name: justify-content
-	Value: normal | <<content-distribution>> | [ <<overflow-position>>? <<content-position>> ]
+	Value: normal | <<content-distribution>> | <<overflow-position>>? [ <<content-position>> | left | right ]
 	Initial: normal
 	Applies to: multicol containers, flex containers, and grid containers
 	Inherited: no
@@ -941,7 +941,7 @@ Inline/Main-Axis Alignment: the 'justify-self' property</h3>
 
 	<pre class="propdef">
 	Name: justify-self
-	Value: auto | normal | stretch | <<baseline-position>> | <<overflow-position>>? <<self-position>>
+	Value: auto | normal | stretch | <<baseline-position>> | <<overflow-position>>? [ <<self-position>> | left | right ]
 	Initial: auto
 	Applies to: block-level boxes, absolutely-positioned boxes, and grid items
 	Inherited: no
@@ -1476,7 +1476,7 @@ Inline/Main-Axis Alignment: the 'justify-items' property</h3>
 
 	<pre class="propdef">
 	Name: justify-items
-	Value: normal | stretch | <<baseline-position>> | [ <<overflow-position>>? <<self-position>> ] | [ legacy || [ ''<content-position>/left'' | ''<content-position>/right'' | ''<content-position>/center'' ] ]
+	Value: normal | stretch | <<baseline-position>> | [ <<overflow-position>>? <<self-position>> ] | [ legacy || [ left | right | center ] ]
 	Initial: legacy
 	Applies to: all elements
 	Inherited: no
@@ -1783,7 +1783,14 @@ Aligning Boxes by Baseline</h3>
 <h2 id="changes">
 Changes</h2>
 
-	Changes since the <a href="https://www.w3.org/TR/2017/WD-css-align-3-20170407/">previous Working Draft</a> include:
+	Changes since the previous Working Draft include:
+	<ul>
+		<li>Dropped the ''left'' and ''right'' keywords from 'align-self' and 'align-content'.
+			They may be re-introduced in a later level if there is demand.
+		<li>A large number of minor corrections and clarifications reported by David Baron.
+	</ul>
+
+	Changes since the <a href="https://www.w3.org/TR/2017/WD-css-align-3-20170407/">7 April 2017 Working Draft</a> include:
 	<ul>
 		<li>Adding a section to clarify handling of partial implementations.
 			(<a href="https://github.com/w3c/csswg-drafts/issues/1167">Issue 1167</a>)
@@ -1810,5 +1817,5 @@ Privacy and Security Considerations</h2>
 <h2 class=no-num id="acknowledgments">
 Acknowledgments</h2>
 
-	Special thanks goes to Javier Fernandez, Markus Mielke, Alex Mogilevsky,
+	Special thanks goes to David Baron, Javier Fernandez, Markus Mielke, Alex Mogilevsky,
 	and the participants in the CSSWG's March 2008 F2F alignment discussions.