diff --git a/README.md b/README.md
index 72b8774..ea0941c 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,6 @@
 ## Docker Environment for [SLAM in Autonomous Driving Book (SAD Book)](https://github.com/gaoxiang12/slam_in_autonomous_driving)
 
-### System: Ubuntu 20.04 + ROS Noetic
-
+### Ubuntu 20.04 Docker Environment
 
 ```bash
 # Clone the repository
@@ -19,13 +18,11 @@ docker compose up -d
 docker compose down
 ```
 
-### Access the Ubuntu 20.04 GUI environment
+### Access the Ubuntu 20.04 GUI Environment
 
 ```bash
 # Open http://localhost:46080/vnc.html in your web browser to connect to 
 # the Ubuntu 20.04 desktop running inside the Docker container.
-
-
 cd ~/workspace/slam_in_autonomous_driving
 
 # Compile g2o first