[css-overflow-4] Bikeshed ambiguities resolution

Author: frivoal

css-overflow-4/Overview.bs

@@ -150,7 +150,7 @@ Until then, this specification only contains additions and extensions to level 3
 	</p>
 
 	<p>
-		CSS Level 2 [[CSS21]] introduced the 'overflow' property,
+		CSS Level 2 [[CSS2]] introduced the 'overflow' property,
 		which allows authors to have overflow be handled by scrolling,
 		which means it is no longer an authoring error.
 		It also allows authors to specify
@@ -417,7 +417,7 @@ This property specifies rendering when inline content overflows
 its line box edge
 in the inline progression direction of its block container element ("the block")
 that has 'overflow'
-other than ''visible''.
+other than ''overflow/visible''.
 
 Even though this property is not inherited,
 annonymous block container boxes generated to
@@ -516,13 +516,13 @@ to facilitate the use of directional characters such as arrows.
 For the ellipsis
 and string values,
 implementations must hide characters and
-<a href="https://www.w3.org/TR/CSS21/visuren.html#inline-boxes">
+<a href="https://www.w3.org/TR/CSS2/visuren.html#inline-boxes">
 atomic inline-level elements</a>
 at the applicable edge(s) of the line as necessary to fit the ellipsis/string, and
 place the ellipsis/string immediately adjacent
 to the applicable edge(s) of the remaining inline content.
 The first character or
-<a href="https://www.w3.org/TR/CSS21/visuren.html#inline-boxes">
+<a href="https://www.w3.org/TR/CSS2/visuren.html#inline-boxes">
 atomic inline-level element</a>
 on a line
 must be clipped rather than ellipsed.
@@ -821,7 +821,7 @@ and extends it further.
 		Name: continue
 		Value: auto | overflow | paginate | fragments | discard
 		Initial: auto
-		Applies to: block containers [[!CSS21]], flex containers [[!CSS3-FLEXBOX]], and grid containers [[!CSS3-GRID-LAYOUT]]
+		Applies to: block containers [[!CSS2]], flex containers [[!CSS3-FLEXBOX]], and grid containers [[!CSS3-GRID-LAYOUT]]
 		Inherited: no
 		Percentages: N/A
 		Computed value: see below
@@ -1219,7 +1219,7 @@ the ''continue/fragments'' value of the 'continue' property.
 		declarations in ''::nth-fragment()'' pseudo-elements override
 		declarations in rules without the pseudo-element.
 		The relative priority within such declarations is determined
-		by normal cascading order (see [[!CSS21]]).
+		by normal cascading order (see [[!CSS2]]).
 	</p>
 
 	<p>