[css-anchor-position] Remove lingering section talking about anchor() triggering auto fallback. w3c#9362

Author: tabatkins

css-anchor-position-1/Overview.bs

@@ -332,16 +332,6 @@ in ''anchor()'' and ''anchor-size()''.
 </div>
 
 
-<!--
-   ███    ██    ██  ██████  ██     ██  ███████  ████████    ███ ███
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--->
-
 Anchor-Based Positioning {#positioning}
 ========================
 
@@ -354,6 +344,17 @@ for more complex positioning or positioning relative to multiple elements,
 the ''anchor()'' function can be used in the [=inset properties=]
 to explicitly refer to edges of an [=anchor element=].
 
+<!-- Big Text: inset-area
+
+████ █    █▌  ███▌  █████▌ █████▌        ███▌  ████▌  █████▌  ███▌
+ ▐▌  █▌   █▌ █▌  █▌ █▌       █▌         ▐█ ▐█  █▌  █▌ █▌     ▐█ ▐█
+ ▐▌  ██▌  █▌ █▌     █▌       █▌         █▌  █▌ █▌  █▌ █▌     █▌  █▌
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+ ▐▌  █▌  ██▌     █▌ █▌       █▌         █████▌ █▌▐█   █▌     █████▌
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+-->
+
 The 'inset-area' Property {#inset-area}
 ---------------------------------------
 
@@ -558,7 +559,16 @@ the rules for handling over-constrained [=inset properties=]
 will resolve the contradiction.
 
 
+<!-- Big Text: anchor()
 
+ ███▌  █    █▌  ███▌  █▌  █▌  ███▌  ████▌    ██ ██
+▐█ ▐█  █▌   █▌ █▌  █▌ █▌  █▌ █▌  █▌ █▌  █▌  █▌   ▐█
+█▌  █▌ ██▌  █▌ █▌     █▌  █▌ █▌  █▌ █▌  █▌ █▌     ▐█
+█▌  █▌ █▌▐█ █▌ █▌     █████▌ █▌  █▌ ████▌  █▌     ▐█
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+█▌  █▌ █▌   ▐▌  ███▌  █▌  █▌  ███▌  █▌  █▌   ██ ██
+-->
 
 The ''anchor()'' Function {#anchor-pos}
 ---------------------------------------------------
@@ -1331,73 +1341,6 @@ This limit must be <em>at least</em> five.
 
 
 
-Fallback and Automatic Positioning {#fallback-automatic}
-----------------------------------
-
-When an element TODO FILL IN NEW DETAILS,
-the element is said to be trying to use <dfn>automatic anchor fallbacks</dfn>
-in that axis.
-
-If the element has ''position-fallback: none'',
-and is trying to use [=automatic anchor fallbacks=] in one axis,
-it automatically generates a [=position fallback list=]
-consisting of two entries:
-
-* the first entry contains all the base-style properties on the element
-	that are valid to use in ''@try'' rules,
-	with ''anchor()/inside''/''outside'' keywords
-	resolved to their appropriate side.
-* one containing the same,
-	but with the [=inset properties=] in the affected axis swapped
-	(resolving the ''inside''/''outside'' keywords accordingly).
-
-If the element uses [=automatic anchor fallbacks=] in both axises,
-it instead adds four entries to the [=position fallback list=]:
-one specifying the base styles, as above,
-then one reversing just the block axis,
-followed by one reversing just the inline axis,
-followed by one reversing both axises at once.
-
-[=Automatic anchor fallback=] can also be used as a shorthand
-in ''@try'' blocks.
-
-If applying an entry in the element's [=position fallback list=]
-would cause the resulting styles
-to satisfy the conditions of [=automatic anchor fallbacks=],
-and the relevant ''anchor()'' function comes from a ''@try'' block
-(rather than from the base styles),
-then that entry of the [=position fallback list=]
-must instead be treated as 2 or 4 consecutive entries,
-generated as above.
-
-<div class=example>
-	For example, the following ''@position-fallback'' rule:
-
-	<pre class=lang-css>
-	@position-fallback --compact {
-		@try {
-			TODO FILL IN
-		}
-	}
-	</pre>
-
-	is equivalent to the following longer, more explicit rule:
-
-	<pre class=lang-css>
-	@position-fallback --expanded {
-		@try {
-			top: anchor(bottom);
-			bottom: auto;
-		}
-		@try {
-			top: auto;
-			bottom: anchor(top);
-		}
-	}
-	</pre>
-</div>
-
-
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