[css-flexbox] Some minor tweaks to the element vs. box thing, to address comments by Peter Moulder.

Author: fantasai

css-flexbox/Overview.bs

@@ -523,11 +523,11 @@ Flex Containers: the <a href="#display-flex">''flex''</a> and <a href="#display-
 	</ul>
 
 	<p>
-		If a box’s specified 'display' is ''inline-flex''
-		and the box is floated or absolutely positioned,
-		the computed value of 'display' is <a href="#display-flex">''flex''</a>.
-		The table in <a href="http://www.w3.org/TR/CSS2/visuren.html#dis-pos-flo">CSS 2.1 Chapter 9.7</a> is thus amended
-		to contain an additional row,
+		If an element's specified 'display' is ''inline-flex'',
+		then its 'display' property computes to <a href="#display-flex">''flex''</a>
+		in certain circumstances:
+		the table in <a href="http://www.w3.org/TR/CSS2/visuren.html#dis-pos-flo">CSS 2.1 Section 9.7</a>
+		is amended to contain an additional row,
 		with ''inline-flex'' in the "Specified Value" column
 		and <a href="#display-flex">''flex''</a> in the "Computed Value" column.
 
@@ -594,7 +594,7 @@ Flex Items</h2>
 		For example, a misparented ''table-cell'' child is fixed up
 		by <a href="http://www.w3.org/TR/CSS21/tables.html#anonymous-boxes">generating anonymous ''table'' and ''table-row'' boxes</a> around it. [[!CSS21]]
 		This fixup must occur <em>before</em> a flex container's children are promoted to <i>flex items</i>.
-		For example, given two contiguous child boxes with ''display:table-cell'',
+		For example, given two contiguous child elements with ''display:table-cell'',
 		an anonymous table wrapper box around them becomes the <i>flex item</i>.
 
 	<p class='note'>