[css-inline-3] Apply recentish patch to css2 10.6.1

Author: frivoal

css-inline-3/Overview.bs

@@ -689,12 +689,10 @@ Inline Box Heights: the 'inline-sizing' property</h3>
 <p>The <span class="propinst-height">'height'</span> property does not
 apply. The height of the content area should be based on the font, but
 this specification does not specify how. A UA may, e.g., use the
-em-box or the maximum ascender and descender of the font. (The latter
+the maximum ascender and descender of the font. (This
 would ensure that glyphs with parts above or below the em-box still
 fall within the content area, but leads to differently sized boxes for
-different fonts; the former would ensure authors can control
-background styling relative to the 'line-height', but leads to glyphs
-painting outside their content area.)
+different fonts.)
 </p>
 <p class=note>Note: level 3 of CSS will probably include a property to
 select which measure of the font is used for the content height.
@@ -707,13 +705,10 @@ class="propinst-line-height">'line-height'</span> is used when calculating
 the height of the line box.
 </p>
 <p><a name="multi-font-inline-height"></a> If more than one font is
-used (this could happen when glyphs are found in different fonts), the
-height of the content area is not defined by this specification.
-However, we suggest that the height is chosen such that the content
-area is just high enough for either (1) the em-boxes, or (2) the
-maximum ascenders and descenders, of <em>all</em> the fonts in the
-element. Note that this may be larger than any of the font sizes
-involved, depending on the baseline alignment of the fonts.
+used (this could happen when glyphs are found in different fonts),
+the height of the content area is not affected
+by the glyphs from the fallback fonts,
+and only depends on the first available font.</p>
 </p>
 
 <h2 id="initial-letter-styling">