CSS
===

Table of Contents
-----------------

.. toctree::
    :maxdepth: 2

    cascade.rst
    selectors.rst
    properties.rst
    box.rst





CSS Values and Units
---------------------

https://developer.mozilla.org/en-US/docs/Learn/CSS/Building_blocks/Values_and_units

auto
    fill the available extra space

    
pixel units (32px)
    Absolute length


percent units (23%)
    percent of Parent's size. for fonts, % units behave like em units


view width/height (vw, vh units)
    percent of the viewport, rather than an element's parent


em
    relative to parent font pixel font size. useful for scaling icons with respect to adjacent font sizes 


rem
    relative to the root font size


fractional units (fr):
    can be used Grid and Flow display modes (containers) to size elements with respect to each others