Sorry, I don't think I was clear enough. The screenshot I added was how I wanted the site to look; I don't have a problem getting my site to look the way I want it to.
The problem is that I would like to click 1 time within the flex items section to speed up development time, rather than typing out "align-self-center" every time in the class section of the properties.
^ This property does not exist for flex containers. I would like to have this for flex containers, which is what the feature request is about
1 click is much faster than 1 click + typing, so that's why I added "'self-align' section in the flex containers" as a feature request, so all I would have to do is click once
Here I would have to click once to focus on the "class" input, then type "align-self-container" which is very time consuming when doing this hundreds or thousands of times