stack & padding fix sorta, preparing for scroll areas

src/layout/widget.rs

@@ -5,7 +5,7 @@ use std::{any::Any, marker::PhantomData};
 pub trait Widget: Any {
     fn draw(&mut self, painter: &mut Painter);
     fn desired_size(&mut self, _: &mut SizeCtx) -> UiVec2 {
-        UiVec2::max_size()
+        UiVec2::MAX_SIZE
     }
 }
 
@@ -76,7 +76,7 @@ impl<const LEN: usize, Ws> WidgetArr<LEN, Ws> {
 }
 
 pub struct ArrTag;
-pub trait WidgetArrLike<const LEN: usize, Tags> {
+pub trait WidgetArrLike<const LEN: usize, Tag> {
     type Ws;
     fn ui(self, ui: &mut Ui) -> WidgetArr<LEN, Self::Ws>;
 }