I just stumbled upon this great little article by Sam Provenza and just want to help spread that knowledge: When you are using flexbox to align items within a container and you want some items to be aligned a little different, the CSS etc. will be your best friend.
margin: auto; margin-left: auto;
Read the article, it explains all you need and play around with this pen if you like: https://codepen.io/cb109/pen/WjJvRQ