diff --git a/assets/baby-graph.png b/assets/baby-graph.png
index ccf86a3..31831dd 100644
Binary files a/assets/baby-graph.png and b/assets/baby-graph.png differ
diff --git a/pages/Database Engineering.md b/pages/Database Engineering.md
index 6c66ee7..8e0583d 100644
--- a/pages/Database Engineering.md	
+++ b/pages/Database Engineering.md	
@@ -4,5 +4,4 @@
 - [[database sharding]]
 - [[database replication]]
 - [[database indexing]]
-- [[database concurrency control]]
--
\ No newline at end of file
+- [[database concurrency control]]
\ No newline at end of file
diff --git a/pages/contents.md b/pages/contents.md
index 235f8e2..66f3729 100644
--- a/pages/contents.md
+++ b/pages/contents.md
@@ -59,6 +59,7 @@
 	- [[Reactive Distributed Systems]]
 	- [[golden metrics for monitoring]]
 - notes from [[philosophy of software design]]
+  collapsed:: true
 	- [[philosophy of software design/complexity in software design]]
 	- [[philosophy of software design/strategic vs tactical programming]]
 	- [[philosophy of software design/modules should be deep]]
@@ -77,7 +78,7 @@
 	- [[software design red flags]]
 - [[Behavioural Interview Questions]]
 - [[Tools & Programming Languages]]
-  collapsed:: true
 	- [[PHP]]
 	- [[Typescript]]
+- [[Database Engineering]]
 -
\ No newline at end of file