### Basic boxes

CSS assumes that every element generates at least one _rectangular boxes_ - __element boxes__.

Each _element box_ contains __content area__ at its center. This area is wrapped in different _paddings, borders and margins_.

Each _margin, padding or margin_ can be used with different __properties__:
* margin-left
* margin-bottom
* padding

Each _content area_ has a __background__ either _color or picture_.

__Borders__ are generating using defined styles:
* solid
* inset
* border-color

#### Element boxes types