Article Preview Component using Flexbox

I know this is just a newbie challenge but It feels difficult for me. I had a hard time on the share button part as it was supposed to be outside of the container but I was not able to solve it. It was the only part that freaked me out and the only thing I did was to improvise with its mobile design. It wasn't that close but I did my best. If you guys have the idea for this I would really appreciate it.