In the following chapter we explain the basics of the layout system in Bloc.
Layout - an object responsible for measuring and laying out an element and its direct children.
Constraint - a property, rule or restriction that is taken into account by
Layout in order to determine the size and position of an element.
Resizer - a
Constraint that describes how a child element should be sized within its parent.
Layout resizers is a property of the common layout constraints and describe how an element should be sized within its parent.