[css-align] Fix id.

Author: tabatkins

css-align/Overview.bs

@@ -576,7 +576,7 @@ Baseline Content-Alignment</h3>
 	to match its <a>alignment baseline</a> in that axis up to that of its <a>baseline-sharing group</a>.
 	This increases the intrinsic size of the box.
 
-<h3 id="overflow-alignment">
+<h3 id="overflow-scroll-position">
 Overflow and Alignment: scroll positions</h3>
 
 	The <a>content distribution properties</a> also affect the initial scroll position,

css-align/Overview.html

@@ -142,7 +142,7 @@ <h2 class="no-num no-toc no-ref heading settled" id=contents><span class=content
 	<li><a href=#content-distribution><span class=secno>4</span>  Content Distribution: the <span class=property data-link-type=propdesc title=justify-content>justify-content</span> and <span class=property data-link-type=propdesc title=align-content>align-content</span> properties</a>
 		<ul class=toc>
 		<li><a href=#baseline-align-content><span class=secno>4.1</span>  Baseline Content-Alignment</a>
-		<li><a href=#overflow-alignment><span class=secno>4.2</span>  Overflow and Alignment: scroll positions</a></ul>
+		<li><a href=#overflow-scroll-position><span class=secno>4.2</span>  Overflow and Alignment: scroll positions</a></ul>
 	<li><a href=#self-alignment><span class=secno>5</span>  Self-Alignment: Aligning the Box within its Parent</a>
 		<ul class=toc>
 		<li><a href=#justify-self-property><span class=secno>5.1</span>  Inline/Main-Axis Alignment: the <span class=property data-link-type=propdesc title=justify-self>justify-self</span> property</a>
@@ -559,14 +559,14 @@ <h3 class="heading settled" data-level=3.4 id=overflow-values><span class=secno>
 	which can’t be scrolled to.</p>
 
 <p>To help combat this problem,
-	an <dfn data-dfn-type=dfn data-export="" id=overflow-alignment0>overflow alignment<a class=self-link href=#overflow-alignment0></a></dfn> mode can be explicitly specified.
+	an <dfn data-dfn-type=dfn data-export="" id=overflow-alignment>overflow alignment<a class=self-link href=#overflow-alignment></a></dfn> mode can be explicitly specified.
 	"True" alignment honors the specified alignment mode in overflow situations, even if it causes data loss,
 	while "safe" alignment changes the alignment mode in overflow situations in an attempt to avoid data loss.</p>
 
-<p>If the <a data-link-type=dfn href=#overflow-alignment0 title="overflow alignment">overflow alignment</a> isn’t explicitly specified,
-	the default <a data-link-type=dfn href=#overflow-alignment0 title="overflow alignment">overflow alignment</a> is determined by the layout mode.
-	Document-centric layout modes, such as block layout, default to "safe" <a data-link-type=dfn href=#overflow-alignment0 title="overflow alignment">overflow alignment</a>,
-	while design-centric layout modes, such as flex layout, default to "true" <a data-link-type=dfn href=#overflow-alignment0 title="overflow alignment">overflow alignment</a>.</p>
+<p>If the <a data-link-type=dfn href=#overflow-alignment title="overflow alignment">overflow alignment</a> isn’t explicitly specified,
+	the default <a data-link-type=dfn href=#overflow-alignment title="overflow alignment">overflow alignment</a> is determined by the layout mode.
+	Document-centric layout modes, such as block layout, default to "safe" <a data-link-type=dfn href=#overflow-alignment title="overflow alignment">overflow alignment</a>,
+	while design-centric layout modes, such as flex layout, default to "true" <a data-link-type=dfn href=#overflow-alignment title="overflow alignment">overflow alignment</a>.</p>
 
 <pre class=prod><dfn class=css data-dfn-type=type data-export="" id=typedef-overflow-position>&lt;overflow-position&gt;<a class=self-link href=#typedef-overflow-position></a></dfn> = true <a class=prod-punc data-link-type=grammar href=http://dev.w3.org/csswg/css-values-3/#comb-one title=|>|</a> safe</pre>
 
@@ -707,8 +707,8 @@ <h3 class="heading settled" data-level=4.1 id=baseline-align-content><span class
 	to match its <a data-link-type=dfn href=#alignment-baseline title="alignment baseline">alignment baseline</a> in that axis up to that of its <a data-link-type=dfn href=#baseline-sharing-group title="baseline-sharing group">baseline-sharing group</a>.
 	This increases the intrinsic size of the box.</p>
 
-<h3 class="heading settled" data-level=4.2 id=overflow-alignment><span class=secno>4.2 </span><span class=content>
-Overflow and Alignment: scroll positions</span><a class=self-link href=#overflow-alignment></a></h3>
+<h3 class="heading settled" data-level=4.2 id=overflow-scroll-position><span class=secno>4.2 </span><span class=content>
+Overflow and Alignment: scroll positions</span><a class=self-link href=#overflow-scroll-position></a></h3>
 
 <p>The <a data-link-type=dfn href=#content-distribution-properties title="content distribution properties">content distribution properties</a> also affect the initial scroll position,
 	setting it to display the appropriate portion of the scrollable area.
@@ -767,7 +767,7 @@ <h3 class="heading settled" data-level=5.1 id=justify-self-property><span class=
 			(Note: This is the legacy behavior of HTML <code>align</code>.)
 			The <a data-link-type=dfn href=#alignment-subject title="alignment subject">alignment subject</a> is the block’s margin box.</p>
 
-<p>The default <a data-link-type=dfn href=#overflow-alignment0 title="overflow alignment">overflow alignment</a> is <a class=css data-link-type=maybe href=#valdef-overflow-position-safe title=safe>safe</a>.
+<p>The default <a data-link-type=dfn href=#overflow-alignment title="overflow alignment">overflow alignment</a> is <a class=css data-link-type=maybe href=#valdef-overflow-position-safe title=safe>safe</a>.
 			In terms of CSS2.1 block-level formatting <a data-biblio-type=normative data-link-type=biblio href=#biblio-css21 title=biblio-CSS21>[CSS21]</a>,
 			the rules for "over-constrained" computations in <a href=http://www.w3.org/TR/CSS21/visudet.html#blockwidth>section 10.3.3</a>
 			are ignored in favor of alignment as specified here
@@ -792,7 +792,7 @@ <h3 class="heading settled" data-level=5.1 id=justify-self-property><span class=
 			as modified by the offset properties (<a class=property data-link-type=propdesc href=http://dev.w3.org/csswg/css-position-3/#top title=top>top</a>/<a class=property data-link-type=propdesc href=http://dev.w3.org/csswg/css-position-3/#right title=right>right</a>/<a class=property data-link-type=propdesc href=http://dev.w3.org/csswg/css-position-3/#bottom title=bottom>bottom</a>/<a class=property data-link-type=propdesc href=http://dev.w3.org/csswg/css-position-3/#left title=left>left</a>).
 			The <a data-link-type=dfn href=#alignment-subject title="alignment subject">alignment subject</a> is the box’s margin box.</p>
 
-<p>The default <a data-link-type=dfn href=#overflow-alignment0 title="overflow alignment">overflow alignment</a> is <a class=css data-link-type=maybe href=#valdef-overflow-position-safe title=safe>safe</a>.
+<p>The default <a data-link-type=dfn href=#overflow-alignment title="overflow alignment">overflow alignment</a> is <a class=css data-link-type=maybe href=#valdef-overflow-position-safe title=safe>safe</a>.
 			In terms of CSS2.1 formatting <a data-biblio-type=normative data-link-type=biblio href=#biblio-css21 title=biblio-CSS21>[CSS21]</a>,
 			the rules for "over-constrained" computations in <a href=http://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
@@ -818,7 +818,7 @@ <h3 class="heading settled" data-level=5.1 id=justify-self-property><span class=
 
 <p>The <a data-link-type=dfn href=#alignment-container title="alignment container">alignment container</a> is the <a data-link-type=dfn href=http://dev.w3.org/csswg/css-grid-1/#grid-cell title="grid cell">grid cell</a>.
 			The <a data-link-type=dfn href=#alignment-subject title="alignment subject">alignment subject</a> is the <a data-link-type=dfn href=http://dev.w3.org/csswg/css-grid-1/#grid-item title="grid item">grid item</a>’s margin box.
-			The default <a data-link-type=dfn href=#overflow-alignment0 title="overflow alignment">overflow alignment</a> is <a class=css data-link-type=maybe href=#valdef-overflow-position-true title=true>true</a>.</p>
+			The default <a data-link-type=dfn href=#overflow-alignment title="overflow alignment">overflow alignment</a> is <a class=css data-link-type=maybe href=#valdef-overflow-position-true title=true>true</a>.</p>
 	</dl>
 
 	<p class=issue id=issue-225803b9><a class=self-link href=#issue-225803b9></a>
@@ -872,7 +872,7 @@ <h3 class="heading settled" data-level=5.2 id=align-self-property><span class=se
 			as modified by the offset properties (<a class=property data-link-type=propdesc href=http://dev.w3.org/csswg/css-position-3/#top title=top>top</a>/<a class=property data-link-type=propdesc href=http://dev.w3.org/csswg/css-position-3/#right title=right>right</a>/<a class=property data-link-type=propdesc href=http://dev.w3.org/csswg/css-position-3/#bottom title=bottom>bottom</a>/<a class=property data-link-type=propdesc href=http://dev.w3.org/csswg/css-position-3/#left title=left>left</a>).
 			The <a data-link-type=dfn href=#alignment-subject title="alignment subject">alignment subject</a> is the box’s margin box.</p>
 
-<p>The default <a data-link-type=dfn href=#overflow-alignment0 title="overflow alignment">overflow alignment</a> is <a class=css data-link-type=maybe href=#valdef-overflow-position-safe title=safe>safe</a>.
+<p>The default <a data-link-type=dfn href=#overflow-alignment title="overflow alignment">overflow alignment</a> is <a class=css data-link-type=maybe href=#valdef-overflow-position-safe title=safe>safe</a>.
 			In terms of CSS2.1 formatting <a data-biblio-type=normative data-link-type=biblio href=#biblio-css21 title=biblio-CSS21>[CSS21]</a>,
 			the rules for "over-constrained" computations in <a href=http://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
@@ -892,7 +892,7 @@ <h3 class="heading settled" data-level=5.2 id=align-self-property><span class=se
 
 <p>The <a data-link-type=dfn href=#alignment-container title="alignment container">alignment container</a> is the <a data-link-type=dfn href=http://dev.w3.org/csswg/css-flexbox-1/#flex-line title="flex line">flex line</a> the item is in.
 			The <a data-link-type=dfn href=#alignment-subject title="alignment subject">alignment subject</a> is the <a data-link-type=dfn href=http://dev.w3.org/csswg/css-flexbox-1/#flex-item title="flex item">flex item</a>’s margin box.
-			The default <a data-link-type=dfn href=#overflow-alignment0 title="overflow alignment">overflow alignment</a> is <a class=css data-link-type=maybe href=#valdef-overflow-position-true title=true>true</a>.
+			The default <a data-link-type=dfn href=#overflow-alignment title="overflow alignment">overflow alignment</a> is <a class=css data-link-type=maybe href=#valdef-overflow-position-true title=true>true</a>.
 			See <a data-biblio-type=normative data-link-type=biblio href=#biblio-css3-flexbox title=biblio-CSS3-FLEXBOX>[CSS3-FLEXBOX]</a> for details.</p>
 
 		<dt>Grid Items:
@@ -901,7 +901,7 @@ <h3 class="heading settled" data-level=5.2 id=align-self-property><span class=se
 
 <p>The <a data-link-type=dfn href=#alignment-container title="alignment container">alignment container</a> is the <a data-link-type=dfn href=http://dev.w3.org/csswg/css-grid-1/#grid-cell title="grid cell">grid cell</a>.
 			The <a data-link-type=dfn href=#alignment-subject title="alignment subject">alignment subject</a> is the <a data-link-type=dfn href=http://dev.w3.org/csswg/css-grid-1/#grid-item title="grid item">grid item</a>’s margin box.
-			The default <a data-link-type=dfn href=#overflow-alignment0 title="overflow alignment">overflow alignment</a> is <a class=css data-link-type=maybe href=#valdef-overflow-position-true title=true>true</a>.</p>
+			The default <a data-link-type=dfn href=#overflow-alignment title="overflow alignment">overflow alignment</a> is <a class=css data-link-type=maybe href=#valdef-overflow-position-true title=true>true</a>.</p>
 	</dl>
 
 <h3 class="heading settled" data-level=5.3 id=baseline-align-self><span class=secno>5.3 </span><span class=content>
@@ -1317,7 +1317,7 @@ <h2 class="no-num no-ref heading settled" id=index><span class=content>
 <li>last-baseline self-alignment, <a href=#baseline-self-alignment title="section 5.3">5.3</a>
 <li>left, <a href=#valdef-item-position-content-position-left title="section 3.1">3.1</a>
 <li>legacy, <a href=#valdef-justify-items-legacy title="section 6.1">6.1</a>
-<li>overflow alignment, <a href=#overflow-alignment0 title="section 3.4">3.4</a>
+<li>overflow alignment, <a href=#overflow-alignment title="section 3.4">3.4</a>
 <li>&lt;overflow-position&gt;, <a href=#typedef-overflow-position title="section 3.4">3.4</a>
 <li>right, <a href=#valdef-item-position-content-position-right title="section 3.1">3.1</a>
 <li>safe, <a href=#valdef-overflow-position-safe title="section 3.4">3.4</a>