Update styles.js

Author: Andang Rian Dimas

styles.js

@@ -35,6 +35,7 @@ export default StyleSheet.create({
     codeBlock: {
       fontFamily: 'Courier',
       fontWeight: '500',
+      backgroundColor: '#DDDDDD',
     },
     del: {
       textDecorationLine: 'line-through',
@@ -178,4 +179,4 @@ export default StyleSheet.create({
       borderBottomWidth: 1,
     },
   });
-  
+