Responsive Result summary Card

What specific areas of your project would you like help with?

I'm still struggling to understand how I can get the width of the parent container (in this case card) to fit the width of the content. It seems like it creates random additional space, and I'm unable to get the sizing correct. Any help would be appreciated.

Also, I'm still learning how I can let the content define the width of the container, and any suggestions/tips on how I can do that in a responsive manner would be helpful!