proc containerLayout(): Layout {...}{.raises: [], tags: [].}

proc container(props: ElemProps = ElemProps(); children: seq[Element] = @[]): Element {...}{.
    raises: [], tags: [TimeEffect].}

proc container(margin: Thickness[float]; children: seq[Element] = @[]): Element {...}{.
    raises: [], tags: [TimeEffect].}

proc container(margin: Thickness[float]; children: varargs[Element] = @[]): Element {...}{.
    raises: [], tags: [TimeEffect].}

proc container(children: varargs[Element] = @[]): Element {...}{.raises: [],
    tags: [TimeEffect].}