(** Common layout and styling patterns *) (** Centers content using flexbox *) val flex_center : Css.t (** Centers content absolutely *) val absolute_center : Css.t (** Stack items vertically with consistent spacing *) val stack : ?gap:Size.t -> unit -> Css.t (** Arrange items horizontally with consistent spacing *) val inline_stack : ?gap:Size.t -> unit -> Css.t (** Full viewport height layout *) val full_height : Css.t (** Sticky header pattern *) val sticky_header : Css.t (** Card-like container with shadow and padding *) val card : Css.t (** Responsive container with max-width constraints *) val container : ?center:bool -> unit -> Css.t