lab1.md

@@ -96,7 +96,7 @@ Start Apptainer ROS
 start_ros
 ```
 
-<div style="padding: 5pt;background: rgb(221, 250, 221);border-left: 3px solid rgb(106, 222, 106);margin-bottom: 1ex;">
+<div style="padding: 5pt;background-color: rgb(221, 250, 221);border-left: 3px solid rgb(106, 222, 106);margin-bottom: 1ex;">
 
 **Important Note!**