Update cssselectors.md

Removing spacing

terms/cssselectors.md

@@ -3,7 +3,7 @@
 CSS Selectors select HTML elements on which to apply particular styling rules. For example, in the following CSS rule set, the `h1` selector applies orange color and italics to all content in the `h1` element.
 
 ```css
-	h1 {
+h1 {
     color: orange;
     font-style: italic;
 }