[css-align] Drop block-axis baselines per <https://lists.w3.org/Archives/Public/www-style/2016Aug/0053.html> Issue #175

Author: fantasai

css-align/Overview.bs

@@ -302,6 +302,8 @@ Baseline Alignment: the ''baseline'' and ''last-baseline'' keywords</h3>
 
 	See [[css-writing-modes-3#intro-baselines]].
 
+	Issue: Deal with <a href="https://lists.w3.org/Archives/Public/www-style/2015Apr/0144.html">overflow as resolved</a>.
+
 	<dfn export>Baseline alignment</dfn> is a form of positional alignment
 	that aligns multiple <a>alignment subjects</a>
 	within a <a>shared alignment context</a>
@@ -316,24 +318,20 @@ Baseline Alignment: the ''baseline'' and ''last-baseline'' keywords</h3>
 	<dl dfn-type=value dfn-for="justify-content, justify-self, justify-items, align-content, align-self, align-items, <baseline-position>">
 		<dt><dfn>baseline</dfn>
 		<dd>
-			Indicates <dfn dfn for export>first-baseline alignment</dfn>:
-			If the box has a <a>natural baseline</a> in the appropriate axis,
-			aligns one of the baselines in the box's <a>first baseline set</a>
-			in that axis
+			Specifies participation in <dfn dfn for export>first-baseline alignment</dfn>:
+			aligns the <a>alignment baseline</a> of the box's <a>first baseline set</a>
 			with the corresponding baseline
-			in the <a>first baseline sets</a>
+			in the shared <a>first baseline set</a>
 			of all the boxes in its <a>baseline-sharing group</a>.
 
 			The <a>fallback alignment</a> for ''baseline'' is ''start''.
 
 		<dt><dfn>last-baseline</dfn>
 		<dd>
-			Indicates <dfn dfn for export>last-baseline alignment</dfn>:
-			If the box has a <a>natural baseline</a> in the appropriate axis,
-			aligns one of the baselines in the box's <a>last baseline set</a>
-			in that axis
+			Specifies participation in <dfn dfn for export>last-baseline alignment</dfn>:
+			aligns the <a>alignment baseline</a> of the box's <a>last baseline set</a>
 			with the corresponding baseline
-			in the <a>last baseline sets</a>
+			in the shared <a>last baseline set</a>
 			of all the boxes in its <a>baseline-sharing group</a>.
 
 			The <a>fallback alignment</a> for ''baseline'' is ''end''.
@@ -748,7 +746,7 @@ Baseline Content-Alignment</h3>
 		<dt>Table Cells:
 		<dd>
 			A <a>table cell</a> participates in first (last) <a>baseline content-alignment</a>
-			in either its row or column (whichever matches the axises of its <a>natural baselines</a>)
+			in either its row or column (whichever matches its <a>inline axis</a>)
 			if its computed 'align-content' is ''baseline'' (''last-baseline'').
 
 		<dt>Flex Items:
@@ -766,7 +764,7 @@ Baseline Content-Alignment</h3>
 		<dt>Grid Items:
 		<dd>
 			A <a>grid item</a> participates in first (last) <a>baseline content-alignment</a>
-			in either its row or column (whichever matches the axises of its <a>natural baselines</a>)
+			in either its row or column (whichever matches its <a>inline axis</a>)
 			if its computed 'align-content' is ''baseline'' (''last-baseline''),
 			and its computed 'align-self' or 'justify-self' (whichever affects its <a>block axis</a>)
 			is ''align-self/stretch'' or ''self-start'' (''self-end'').
@@ -871,7 +869,7 @@ Inline/Main-Axis Alignment: the 'justify-self' property</h3>
 	Unless otherwise specified, this value falls back to ''flex-start''.
 
 	All other values cause a 'width'/'height' of ''width/auto''
-	to be treated as ''fit-content''.
+	to be treated as ''width/fit-content''.
 
 	Issue: Should ''justify-self/stretch'' allow a fallback alignment,
 	like it does on 'align-content' and 'justify-content'?
@@ -1222,7 +1220,7 @@ Baseline Self-Alignment</h3>
 		<dt>Grid Items:
 		<dd>
 			A <a>grid item</a> participates in first (last) <a>baseline self-alignment</a>
-			in either its row or column (whichever axises it has a <a>natural baseline</a> in)
+			in either its row or column (whichever matches its <a>inline axis</a>)
 			if its 'justify-self' or 'align-self' property (whichever affects its <a>block axis</a>)
 			computes to ''baseline'' (''last-baseline'').
 	</dl>
@@ -1457,12 +1455,10 @@ Baseline Alignment Terminology</h3>
 	This is possible only if they
 
 	<ul>
-		<li>share an <a>alignment context</a> whose axis is parallel to an axis in which they have a baseline
-		<li>the baselines that want to align are on the same “side” of the alignment context,
-		e.g. the boxes in a vertical-axis <a>alignment context</a> all want to align their leftmost baseline
-		(whether that is the first baseline in a ''vertical-lr'' flow,
-		the last baseline in a ''vertical-rl'' flow,
-		or the first baseline of a ''vertical-lr'' flow that has been propagated to being the block-axis <a>first baseline</a> of a ''horizontal-tb'' ''ltr'' grid container)
+		<li>share an <a>alignment context</a> whose axis is parallel to their <a>inline axis</a>
+		<li>either have the same <a>block flow direction</a> and <a>baseline alignment preference</a>,
+			or have opposite <a>block flow direction</a> and opposite <a>baseline alignment preference</a>
+			(in other words, the baselines that want to align are on the same side of the alignment context).
 	</ul>
 
 	Boxes <dfn lt="shared alignment context|alignment context" export>share an alignment context</dfn> along a particular axis when they are: