diff --git a/README.md b/README.md
index 616e0e2..b617e1e 100644
--- a/README.md
+++ b/README.md
@@ -3,11 +3,15 @@
 
 **BUILD IMAGE**
 
+~~~
 docker build --tag firefox:$(grep 'VERSION' Dockerfile |awk '{print $3}') .
+~~~
 
 **RE-TAG IMAGE**
 
+~~~
 docker tag firefox:$(grep 'VERSION' Dockerfile |awk '{print $3}') firefox:latest
+~~~
 
 **LAUNCH FIREFOX**