test another stuff

Die Challenges.md

@@ -114,13 +114,10 @@ def scan_callback(self, msg):
                 self.drive_allowed = False
                 sys.exit()
 ```
-Hier nochmal dargestellt in Bildern:
 
-<p float="left">
-    <img src="source/Challenge_2_1.png" width="180" />
-    <img src="source/Challenge_2_2.png" width="188.7" />
-    <img src="source/Challenge_2_3.png" width="181.6" />
-</p>
+Der Ablauf als Video:
+
+<video width="720" height="480" controls src="_static/Challenge_2.mp4"></video>
 
 
 ## Challenge 4:
@@ -222,14 +219,10 @@ def check_to_stop_turn(self, msg):
         else:
             return False
 ```
-Der Ablauf in Bildern:
-
-<p float="left">
-    <img src="source/Challenge_4_1.png" width="219.5"/>
-    <img src="source/Challenge_4_2.png" width="220" />
-    <img src="source/Challenge_4_3.png" width="220" />
-    <img src="source/Challenge_4_4.png" width="218" />
-</p>
+
+Hier wieder das Video dazu:
+
+<video width="720" height="480" controls src="_static/Challenge_4.mp4"></video>
 
 
 ## Blockquotes