fix diagram

tabatkins · tabatkins · commit 719fa0acd816 · 2023-03-24T12:33:23.000-07:00
diff --git a/css-position-4/Overview.bs b/css-position-4/Overview.bs
@@ -47,7 +47,7 @@ looking down:
 	            |      |    |    |
 	            |      |    |    |   ⇦ ☻
 	            |      |    |    |   user
-	z-index:  canvas  -1        0    1
+	z-index:  canvas  -1    0    1
 	</pre>
 
 The stacking context background and most negative positioned
