[css-nesting] feedback updates

Author: argyleink

css-nesting-1/Overview.bs

@@ -226,18 +226,29 @@ Direct Nesting {#direct}
 		   :is(.foo, .bar).qux { color: red; }
 		 */
 
-		ul, ol {
+		.foo {
+			color: blue;
+			& .bar & .baz & .qux { color: red; }
+		}
+		/* equivalent to
+		   .foo { color: blue; }
+		   .foo .foo .bar .foo .baz .foo .qux { color: blue; }
+		 */
+
+		.error, #404 {
 			&:not(.foo,.bar) > .baz { color: red; }
 		}
 		/* equivalent to
-			 :is(ul,ol):not(.foo,.bar) > .baz { color: red; }
+		   :is(.error, #404):not(.foo,.bar) > .baz { color: red; }
 		 */
 
 		.foo {
 			&:is(.bar, &.baz) { color: red; }
 		}
 		/* equivalent to
-			 .foo:is(.bar, .foo:is(.baz)) { color: red; }
+		   .foo:is(.bar, .foo:is(.baz)) { color: red; }
+		 */
+
 		main {
 			display: grid;
 			& > section {
@@ -294,7 +305,8 @@ Direct Nesting {#direct}
 			color: red;
 			&&.bar { color: blue; }
 		}
-		/* Invalid because the 1st & isn't at the start of the selector */
+		/* Invalid because the 1st & is no longer 
+		   at the start of a selector */
 		</pre>
 	</div>