If you work on something a little bit every day, you end up with something that is massive.
Kenneth Goldsmith

:indeterminate

The :indeterminate CSS pseudo-class represents any form element whose state is indeterminate, such as checkboxes which have their HTML indeterminate attribute set to true, radio buttons which are members of a group in which all radio buttons are unchecked, and indeterminate <progress> elements.
:indeterminate css reference