Image of what I'm seeing: https://i.imgur.com/lavb2Bf.png
I just started customizing the theme, so I haven't done anything heavy, yet. But it seems as though the theme is using flexbox, it's based on Magento Blank, and it's using a wide layout. I specifically put into the theme's theme.xml file the following line of code, so it inherits from Magento/blank.
<parent>Magento/blank</parent>
And this is what the directory structure of my theme looks like: https://i.imgur.com/34fgevY.png
My question is, how do I get this to use a boxed layout? I don't want to reinvent the wheel and start doing break points, and all sorts of stuff. To me, that should've been included in the base Magento Blank theme, right?
Thank you.