Move to collapse

Author: lawsie

en/step_1.md

@@ -11,6 +11,12 @@ The web server will be able to react to the dynamic content that the user inputs
 
 - A Raspberry Pi with the latest Raspberry Pi OS 
 
+
+--- collapse ---
+---
+title: Installing Flask
+---
+
 `Flask` should be pre-installed as part of Raspberry Pi OS, but you can also install it with the command
 
 --- code ---
@@ -19,4 +25,5 @@ language: bash
 line_numbers: false
 ---
 sudo apt-get install python3-flask
---- /code ---
+--- /code ---
+--- /collapse ---