diff --git a/swarmlab/files/Architecture.adoc b/swarmlab/files/Architecture.adoc
index bdd95ff..2e71f80 100644
--- a/swarmlab/files/Architecture.adoc
+++ b/swarmlab/files/Architecture.adoc
@@ -11,9 +11,9 @@
 :sectnums: 
 
 
-Architecture overview
+**Architecture overview**
 
-image:swarm-diagram.png[swarmlab,550,550,role="right"] 
+image:swarm-diagram.png[swarmlab,550,550"] 
 
 == Storage 
 
diff --git a/swarmlab/main.adoc b/swarmlab/main.adoc
index 7dddf17..551e6df 100644
--- a/swarmlab/main.adoc
+++ b/swarmlab/main.adoc
@@ -22,7 +22,7 @@ include::{sourcedir}/registration/registration_main.adoc[]
 include::{sourcedir}/navigation/navigation_main.adoc[]
 
 <<<
- 
+  
 = For Tutors
 
 include::{sourcedir}/tutor/for_tutors_main.adoc[]