diff --git a/simplified-process.md b/simplified-process.md
index 45676dd7fc6180513adf7d6f6dfe8be140d3344c..99005413f149fc5b193c2fc091d1a840a507a65f 100644
--- a/simplified-process.md
+++ b/simplified-process.md
@@ -1,5 +1,6 @@
 ```mermaid
 graph TB
+  classDef gitlab fill:#f90,stroke:#333,stroke-width:3px
   start("Start")
   reserve["Reserve 'contribution name' in portal"]
   createBranch["Create contribution branch<br />named as 'contribution name' "]
@@ -23,6 +24,7 @@ graph TB
   stop("Stop")
   conflict{"Is there any conflict?"}
   fixConflict["Rebase contribution branch/fix conflict"]
+  class createBranch,submitChanges,blockContribution,submitContrib,unlockMR,reviseContrib,applyMR,fixConflict,makeBaseline,closeMR gitlab;
   start-->reserve
   reserve-->createBranch
   createBranch-->submitChanges
@@ -51,5 +53,6 @@ graph TB
   newBaseline--Yes-->makeBaseline
   newBaseline--No-->stop
   makeBaseline-->stop
+
 ```