[css-lists-3] Very minor wording tweaks

Author: fantasai

css-lists-3/Overview.bs

@@ -93,7 +93,7 @@ Markers</h2>
 	a symbol or ordinal that helps denote the beginning of each <a>list item</a> in a list.
 	In the CSS layout model,
 	<a>list item</a> <a>markers</a> are represented by
-	the <a>marker box</a> associated with the <a>list item</a>.
+	a <a>marker box</a> associated with each <a>list item</a>.
 	The contents of this <a>marker</a> can be controlled with
 	the 'list-style-type' and 'list-style-image' properties on the <a>list item</a>
 	and by assigning properties to its ''::marker'' pseudo-element.
@@ -193,7 +193,7 @@ The ''::marker'' Pseudo-Element</h3>
 <h3 id='content-property'>
 Generating Marker Contents</h3>
 
-	The contents of the ''::marker'' pseudo-element
+	The contents of the <a>marker box</a>
 	are determined by the first of these conditions that is true:
 
 	<dl class=switch>
@@ -297,7 +297,7 @@ Text-based Markers: the 'list-style-type' property</h3>
 	Specifies the <dfn>marker string</dfn>,
 	which is used to fill the <a>list item</a>’s <a>marker</a>
 	when its 'content' value is ''content/normal''
-	and there is [=marker image=].
+	and there is no [=marker image=].
 	The values are as follows:
 
 	<dl dfn-type="value" dfn-for="list-style-type">
@@ -413,7 +413,7 @@ Positioning Markers: The 'list-style-position' property</h3>
 			If the <a>list item</a> is an <a>inline box</a>:
 			this value is equivalent to ''inside''.
 
-			Issue: Alternatively, ''outside'' could lay out the marker as a previous sibling of the principal box.
+			Issue: Alternatively, ''outside'' could lay out the marker as a previous sibling of the principal inline box.
 	</dl>
 
 	<div class=example>