diff --git a/public/web/experiment/dance.html b/public/web/experiment/dance.html
index b92aeca7..ee27148e 100644
--- a/public/web/experiment/dance.html
+++ b/public/web/experiment/dance.html
@@ -1,4 +1,4 @@
-<
+
diff --git a/public/web/experiment/planet.html b/public/web/experiment/planet.html
index 2acf6b32..63f377cc 100644
--- a/public/web/experiment/planet.html
+++ b/public/web/experiment/planet.html
@@ -1,4 +1,4 @@
-<
+
diff --git a/public/web/experiment/spiral.html b/public/web/experiment/spiral.html
index 2e444440..dbf0df5a 100644
--- a/public/web/experiment/spiral.html
+++ b/public/web/experiment/spiral.html
@@ -1,4 +1,4 @@
-<
+