[css-position-3] Fix indentation.

Author: fantasai

css-position-3/Overview.bs

@@ -382,27 +382,27 @@ Containing Blocks of Positioned Boxes</h3>
 <h4 id="original-cb">
 Further Shrinking the Containing Block</h4>
 
-Some features can additionally change the [=containing block=]
-of [=absolutely positioned=] boxes.
-These are applied in the following order,
-with earlier steps modifying the containing block
-that later steps see:
-
-1. If the [=containing block=] is generated by a [=grid container=],
-	the [=grid-placement properties=]
-	on the positioned element
-	change the [=containing block=]
-	to the corresponding [=grid area=]
-	of that [=grid container=].
-	See [[css-grid-1#abspos-items]].
-
-2. If 'inset-area' has an effect on the positioned element,
-	the [=containing block=] is the specified area of the [=inset-area grid=].
-	See [[css-anchor-position-1#inset-area]].
-
-The element's <dfn export>original containing block</dfn>
-is its [=containing block=]
-before applying any of these effects.
+	Some features can additionally change the [=containing block=]
+	of [=absolutely positioned=] boxes.
+	These are applied in the following order,
+	with earlier steps modifying the containing block
+	that later steps see:
+
+	1. If the [=containing block=] is generated by a [=grid container=],
+		the [=grid-placement properties=]
+		on the positioned element
+		change the [=containing block=]
+		to the corresponding [=grid area=]
+		of that [=grid container=].
+		See [[css-grid-1#abspos-items]].
+
+	2. If 'inset-area' has an effect on the positioned element,
+		the [=containing block=] is the specified area of the [=inset-area grid=].
+		See [[css-anchor-position-1#inset-area]].
+
+	The element's <dfn export>original containing block</dfn>
+	is its [=containing block=]
+	before applying any of these effects.
 
 <h3 id="stacking">
 Painting Order and Stacking Contexts</h3>