[css-anchor-position-1] Editorial tweaks to note/intro text.

Author: fantasai

css-anchor-position-1/Overview.bs

@@ -1183,11 +1183,10 @@ Inherited: no
 Animation type: discrete
 </pre>
 
-There are times when an element's anchors
-are not appropriate for positioning the element with,
-and it would be better to simply not display the element at all.
-'position-visibility' provides several conditions
-where this could be the case.
+There are some conditions in which it might not make sense
+to display an [=absolutely-positioned=] box.
+This property allows such boxes to be made conditionally visible,
+depending on some commonly needed layout conditions.
 
 <dl dfn-type=value dfn-for=position-visibility>
 	: <dfn>always</dfn>
@@ -1857,7 +1856,7 @@ the following [=properties=]:
 
 It is invalid to use ''!important'' on the properties in the <<declaration-list>>.
 Doing so causes the property it is used on to become invalid,
-but does not invalid the ''@property-try'' rule as a whole.
+but does not invalidate the ''@property-try'' rule as a whole.
 
 All of the properties in a ''@position-try'' are applied to the element
 as part of the <dfn>Position Fallback Origin</dfn>,
@@ -1875,14 +1874,18 @@ and acts as specified.)
 
 Note: The [=accepted @position-try properties=] are the smallest group of properties
 that affect just the size and position of the box itself,
-without changing its contents area.
-This significantly simplifies the implementation of position fallback,
-without reducing the possible behaviors overly much.
+without otherwise changing its contents or styling.
+This significantly simplifies the implementation of position fallback
+while addressing the fundamental need to move an anchor-positioned box
+in response to available space.
+Since these rules override normal declarations in the [=Author Origin=],
+this also limits the poor interactions of ''@position-try'' declarations
+with the normal cascading and inheritance of other properties.
 It is expected that a future extension to [=container queries=]
 will allow querying an element
 based on the position fallback it's using,
-allowing many cases not allowed by this restricted list
-to be handled.
+enabling the sort of conditional styling
+not allowed by this restricted list.
 
 Note: If multiple elements using different anchors
 want to use the same fallback positioning,