[css-sizing-4] Move paragraph.

Author: fantasai

css-sizing-4/Overview.bs

@@ -148,20 +148,6 @@ Intrinsic Aspect Ratios: the 'aspect-ratio' property</h3>
 	This property sets a <dfn export>preferred aspect ratio</dfn> for the box,
 	which will be used in the calculation of ''height/auto'' sizes
 	and some other layout functions.
-	The box’s <a>automatic sizes</a>
-	are calculated the same as for
-	a <a>replaced element</a> with an <a>intrinsic aspect ratio</a>
-	and no <a>intrinsic dimension</a> in that axis,
-	see e.g. <a href="https://www.w3.org/TR/CSS2/visudet.html">CSS2 &sect;&#x202F;10</a>
-	and <a href="https://www.w3.org/TR/css-flexbox-1/#algo-main-item">CSS Flexible Box Model Level 1 &sect;&#x202F;9.2</a>.
-
-	The axis in which the <a>preferred size</a> calculation
-	depends on this aspect ratio
-	is called the <dfn export>ratio-dependent axis</dfn>,
-	and the resulting size is <a>definite</a>
-	if its input sizes are also <a>definite</a>.
-	The opposite axis (on which the [=ratio-dependent axis=] size depends)
-	is the <dfn export>ratio-determining axis</dfn>.
 
 	<dl dfn-for="aspect-ratio" dfn-type="value">
 		<dt><dfn>auto</dfn>
@@ -190,6 +176,21 @@ Intrinsic Aspect Ratios: the 'aspect-ratio' property</h3>
 			work with the [=content box=] dimensions always.
 	</dl>
 
+	When a box has a [=preferred aspect ratio=],
+	its <a>automatic sizes</a>
+	are calculated the same as for
+	a <a>replaced element</a> with an <a>intrinsic aspect ratio</a>
+	and no <a>intrinsic dimension</a> in that axis,
+	see e.g. <a href="https://www.w3.org/TR/CSS2/visudet.html">CSS2 &sect;&#x202F;10</a>
+	and <a href="https://www.w3.org/TR/css-flexbox-1/#algo-main-item">CSS Flexible Box Model Level 1 &sect;&#x202F;9.2</a>.
+	The axis in which the <a>preferred size</a> calculation
+	depends on this aspect ratio
+	is called the <dfn export>ratio-dependent axis</dfn>,
+	and the resulting size is <a>definite</a>
+	if its input sizes are also <a>definite</a>.
+	The opposite axis (on which the [=ratio-dependent axis=] size depends)
+	is the <dfn export>ratio-determining axis</dfn>.
+
 	Note: If a box has both a 'width' and a 'height'
 	that are not <a lt="automatic size">automatic</a>
 	(or, in the case of a <a>flex item</a>,