diff --git a/src/lab/Courses aligned.html b/src/lab/Courses aligned.html
index d70b9c529..bd47293b5 100644
--- a/src/lab/Courses aligned.html
+++ b/src/lab/Courses aligned.html
@@ -40,7 +40,7 @@
- 
+
diff --git a/src/lab/Experiments.html b/src/lab/Experiments.html
index 8e523316d..01dee5e3e 100644
--- a/src/lab/Experiments.html
+++ b/src/lab/Experiments.html
@@ -40,7 +40,7 @@
-
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diff --git a/src/lab/Feedback.html b/src/lab/Feedback.html
index 451805713..e2baed28b 100644
--- a/src/lab/Feedback.html
+++ b/src/lab/Feedback.html
@@ -41,7 +41,7 @@
-
+
diff --git a/src/lab/Introduction.html b/src/lab/Introduction.html
index 2f745391b..4d4c6220e 100644
--- a/src/lab/Introduction.html
+++ b/src/lab/Introduction.html
@@ -41,7 +41,7 @@
-
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diff --git a/src/lab/Pre-requisites.html b/src/lab/Pre-requisites.html
index 93efadd85..d1a47aabe 100644
--- a/src/lab/Pre-requisites.html
+++ b/src/lab/Pre-requisites.html
@@ -40,7 +40,7 @@
-
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diff --git a/src/lab/Target audience.html b/src/lab/Target audience.html
index 689298e15..ea8a91fe8 100644
--- a/src/lab/Target audience.html
+++ b/src/lab/Target audience.html
@@ -40,7 +40,7 @@
-
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diff --git a/src/lab/index.html b/src/lab/index.html
index 0a77617cc..c29b7a37b 100644
--- a/src/lab/index.html
+++ b/src/lab/index.html
@@ -40,7 +40,7 @@
-
+