fn main() {
    rsx! {
        div {{
            let millis = timer.with(|t| t.duration().saturating_sub(t.started_at.map(|x| x.elapsed()).unwrap_or(Duration::ZERO)).as_millis());
            format!("{:02}:{:02}:{:02}.{:01}",
                    millis / 1000 / 3600 % 3600,
                    millis / 1000 / 60 % 60,
                    millis / 1000 % 60,
                    millis / 100 % 10)
        }}
        div {
            input { r#type: "number", min: 0, max: 99, value: format!("{:02}",timer.read().hours), oninput: move |e| {
                timer.write().hours = e.value().parse().unwrap_or(0);
                }
            }
            // some comment
            input { r#type: "number", min: 0, max: 99, value: format!("{:02}",timer.read().hours), oninput: move |e| {
                timer.write().hours = e.value().parse().unwrap_or(0);
                }
            }
        }
    }
}