[css-values-4][editorial] clean up some bikeshed issues

Author: tabatkins

css-values-4/Overview.bs

@@ -262,8 +262,8 @@ Component Value Multipliers</h3>
 			at least one component value must not be omitted.
 	</ul>
 
-	The [=+=] and [=#=] multipliers may be stacked as ''+#'';
-	similarly, the [=#=] and [=?=] multipliers may be stacked as ''#?''.
+	The <css>+</css> and <css>#</css> multipliers may be stacked as ''+#'';
+	similarly, the <css>#</css> and <css>?</css> multipliers may be stacked as ''#?''.
 	These stacks each represent the later multiplier
 	applied to the result of the earlier multiplier.
 	(These same stacks can be represented using grouping,
@@ -585,7 +585,7 @@ Pre-defined Keywords</h3>
 
 	In the value definition fields,
 	<dfn lt="keyword" export for=CSS>keywords</dfn> with a pre-defined meaning appear literally.
-	Keywords are <a>CSS identifiers</a>
+	Keywords are [=/CSS identifiers=]
 	and are interpreted <a lt="ASCII case-insensitive">ASCII case-insensitively</a>
 	(i.e., [a-z] and \[A-Z] are equivalent).
 
@@ -1200,7 +1200,7 @@ Numbers with Units: <a>dimension</a> values</h3>
 	When written literally,
 	a <a>dimension</a> is a <a>number</a>
 	immediately followed by a unit identifier,
-	which is a [=CSS identifier=].
+	which is a [=/CSS identifier=].
 	It corresponds to the <<dimension-token>> production
 	in the <a href="https://www.w3.org/TR/css-syntax/">CSS Syntax Module</a> [[!CSS-SYNTAX-3]].
 	Like keywords, unit identifiers are <a>ASCII case-insensitive</a>.
@@ -1597,7 +1597,7 @@ Font-relative Lengths: the ''em'', ''ex'', ''cap'', ''ch'', ''ic'', ''rem'', ''l
 	or, in the case of ''rem'' and ''rlh'', the metrics of the root element.
 
 	<figure>
-		<img src="images/Typography_Line_Terms.svg" alt="The word 'Sphinx' annotated with various font metrics: ascender height, to the top of the h's serif; cap height, to the visually approximate top of the S; the x height, to the visually approximate top of the x; the baseline, along the bottom of S, h, i, n, and x; and the descender height, to the bottom fo the p.">
+		<img src="images/Typography_Line_Terms.svg" width=361 height=97 alt="The word 'Sphinx' annotated with various font metrics: ascender height, to the top of the h's serif; cap height, to the visually approximate top of the S; the x height, to the visually approximate top of the x; the baseline, along the bottom of S, h, i, n, and x; and the descender height, to the bottom fo the p.">
 		<figcaption>
 			Common typographic metrics
 		</figcaption>