@type t() :: %Rendro.Block{
  break_after: boolean(),
  break_before: boolean(),
  content:
    Rendro.Text.t()
    | Rendro.Table.t()
    | Rendro.FormField.t()
    | Rendro.Link.t()
    | term(),
  height: number() | nil,
  id: String.t() | nil,
  keep_together: boolean(),
  keep_with_next: boolean(),
  outline: boolean() | String.t(),
  outline_level: non_neg_integer(),
  width: number() | nil,
  x: number(),
  y: number()
}