FlexBox recap

Following along egghead.io flexbox tutorials
Bootstrap framework v4 using Flexbox for grid layout

Flexbox
make container display: flex
can set children row or column
 column: flows top to bottom
order: can set order in which children are displayed
 all children have 0 for order by default and are laid out as in the dom
 changing order high moves it after lower orders in flow
 can also set to negative number to move higher
justify-content: affets way children are aligned along the way the content is flowing
 defaults to flex-start which means they bunch near start
 center: can center vertically
 flex-end
 space-between
align-items: affects space perpindicular to the flex direction
 defaults to stretch
align-self: sam as align-items but only applied to specific individual children

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