Function center

pub fn center<'a, Message, Theme, Renderer>(
    content: impl Into<Element<'a, Message, Theme, Renderer>>,
) -> Container<'a, Message, Theme, Renderer>
where
    Theme: Catalog + 'a,
    Renderer: Renderer,

Creates a new Container that fills all the available space and centers its contents inside.

This is equivalent to:

let centered = container("Centered!").center(Length::Fill);