A Block represents an object in your website. For example:
- a person
- a login form
- a menu
- a search form
An Element is a component within the block that performs a particular function. It should only make sense in the context of its block. For example:
- a hand
- a login button
- a menu item
- a search input field
A Modifier is how we represent the variations of a block. For example:
- a female person
- a condensed login form (e.g. we’re hiding the labels in one version)
- a menu modified to look differently for a footer or sitemap
- a search input field with a particular button style
