use gpui::{    App, Application, Bounds, Context, FontStyle, FontWeight, StyledText, Window, WindowBounds,    WindowOptions, div, prelude::*, px, size,}; struct HelloWorld {} impl Render for HelloWorld {    fn render(&mut self, _window: &mut Window, _cx: &mut Context<Self>) -> impl IntoElement {        div()            .bg(gpui::white())            .flex()            .flex_col()            .gap_2()            .p_4()            .size_full()            .child(div().child("Text left"))            .child(div().text_center().child("Text center"))            .child(div().text_right().child("Text right"))            .child(div().text_decoration_1().child("Text left (underline)"))            .child(                div()                    .text_center()                    .text_decoration_1()                    .child("Text center (underline)"),            )            .child(                div()                    .text_right()                    .text_decoration_1()                    .child("Text right (underline)"),            )            .child(div().line_through().child("Text left (line_through)"))            .child(                div()                    .text_center()                    .line_through()                    .child("Text center (line_through)"),            )            .child(                div()                    .text_right()                    .line_through()                    .child("Text right (line_through)"),            )            .child(                div()                    .flex()                    .gap_2()                    .justify_between()                    .child(                        div()                            .w(px(400.))                            .border_1()                            .border_color(gpui::blue())                            .p_1()                            .whitespace_nowrap()                            .overflow_hidden()                            .text_center()                            .child("A long non-wrapping text align center"),                    )                    .child(                        div()                            .w_32()                            .border_1()                            .border_color(gpui::blue())                            .p_1()                            .whitespace_nowrap()                            .overflow_hidden()                            .text_right()                            .child("100%"),                    ),            )            .child(div().flex().gap_2().justify_between().child(                StyledText::new("ABCD").with_highlights([                    (0..1, FontWeight::EXTRA_BOLD.into()),                    (2..3, FontStyle::Italic.into()),                ]),            ))    }} fn main() {    Application::new().run(|cx: &mut App| {        let bounds = Bounds::centered(None, size(px(800.0), px(600.0)), cx);        cx.open_window(            WindowOptions {                window_bounds: Some(WindowBounds::Windowed(bounds)),                ..Default::default()            },            |_, cx| cx.new(|_| HelloWorld {}),        )        .unwrap();        cx.activate(true);    });}