A flexbox is an element that allows you to flexibly customize the layout of its children.
An element is made into a flexbox by giving it the display: flex CSS property.
flexbox
child elements
Flexbox Properties
Customize the layout of the flexbox's children by given the flexbox additional CSS properties. For example:
flex-wrap
justify-content
Child Properties
You can also customize the children of the flexbox (the elements that are inside the box) by giving them additional CSS properties. For example:
flex-grow
Flexbox vs. Children
Don't get the flexbox (sometimes called the flex container) mixed up with the child elements (sometimes called the flex items) that are inside of it!
The flexbox specifies how its children are positioned.
The child elements specify how much space they should take up.
Nesting Flexboxes
A flexbox can contain other flexboxes inside of it!
That is: a child of a flexbox can itself be a flexbox (specifying how its children are positioned).
But a flexbox only influences its children, not its grandchildren! A flexbox lays out its child boxes; what happens inside those boxes is their own business.
Using Flexboxes
Flexboxes are great solutions for:
Centering block elements (use justify-content)
Creating "columns" for a page"
Making an element fill a space larger than its content (use flex-grow)
... and more!
Flexboxes are not great solutions for:
Having block elements stack on top of each other (just use normal elements!)
Adding specific spacing between elements (use margin/padding)
... doing anything else that the browser does by default!
