Update README.md

Author: salmonextreme123

README.md

@@ -31,12 +31,6 @@
 
 A “rule declaration” is the name given to a selector (or a group of selectors) with an accompanying group of properties. Here's an example:
 
-```css
-.listing {
-  font-size: 18px;
-  line-height: 1.2;
-}
-```
 
 ### Selectors