How to make 3 column layout using Adaptive cards in PnP Search Results

Dear Experts,

I am working with PnP Search Results. Especially, I am customizing Adaptive Cards to show People's Card information in the Search Results and so far I got one column. Please visit the link below to see what I have done so far. 

https://github.com/merpssirk/demo/blob/main/image/PeopleSearcAdaptiveCard.png  

I want to have at least 3 column layout. 

How can I do that? Can you please guide me through this? 

Thank you.