Function dialog 

pub fn dialog<'a, Message, Theme, Renderer>(
    is_open: bool,
    base: impl Into<Element<'a, Message, Theme, Renderer>>,
    content: impl Into<Element<'a, Message, Theme, Renderer>>,
    palette: &'a Palette,
) -> Dialog<'a, Message, Theme, Renderer>
where
    Renderer: 'a + Renderer + Renderer,
    Theme: 'a + Catalog,
    Message: 'a + Clone,
    <Theme as Catalog>::Class<'a>: From<StyleFn<'a, Theme>>,