now fit that in a 2 column A5 Flyer with one side

chatgpt-streetcomplete-flyer.tex

@@ -1,5 +1,5 @@
-\documentclass[11pt]{article}
-
+\documentclass[a5paper,twocolumn]{article}
+\usepackage[margin=1cm]{geometry}
 \usepackage{graphicx}
 \usepackage{color}
 
@@ -31,9 +31,9 @@ StreetComplete is a mobile app that allows you to improve the map of your city b
 - Open the app and select the questions you want to answer
 - Go out and answer the questions by taking photos and adding information
 - Your contributions will be reviewed and added to the map
+\end{center}
 
-\vspace{1cm}
-
+\begin{flushright}
 {\large\textbf{Why participate}}
 
 \vspace{0.5cm}
@@ -41,7 +41,6 @@ StreetComplete is a mobile app that allows you to improve the map of your city b
 - Help make your city more accessible
 - Improve the map for everyone
 - Learn more about the streets around you
-
 \vspace{1cm}
 
 {\large\textbf{Contact Information}}
@@ -51,8 +50,5 @@ StreetComplete is a mobile app that allows you to improve the map of your city b
 Email: contact@streetcomplete.com
 
 Website: www.streetcomplete.com
-
-\end{center}
-
+\end{flushright}
 \end{document}
-