message: Implement `Container` styling in `iced_web`
diff: @@ -14,7 +14,7 @@ pub struct Container<'a, Message> {
  max_height: u32,
  horizontal_alignment: Align,
  vertical_alignment: Align,
  - style: Box<dyn StyleSheet>,
  + style_sheet: Box<dyn StyleSheet>,
  content: Element<'a, Message>,
  }
  @@ -35,7 +35,7 @@ impl<'a, Message> Container<'a, Message> {
  max_height: u32::MAX,
  horizontal_alignment: Align::Start,
  vertical_alignment: Align::Start,
  - style: Default::default(),
  + style_sheet: Default::default(),
  content: content.into(),
  }
  }
  @@ -94,7 +94,7 @@ impl<'a, Message> Container<'a, Message> {
  ///
  /// [`Container`]: struct.Container.html
  pub fn style(mut self, style: impl Into<Box<dyn StyleSheet>>) -> Self {
  - self.style = style.into();
  + self.style_sheet = style.into();
  self
  }
  }
  @@ -113,11 +113,7 @@ where
  let column_class = style_sheet.insert(bump, css::Rule::Column);
  - let width = css::length(self.width);
  - let height = css::length(self.height);
  -
  - let align_items = css::align(self.horizontal_alignment);
  - let justify_content = css::align(self.vertical_alignment);
  + let style = self.style_sheet.style();
  let node = div(bump)
  .attr(
  @@ -128,12 +124,17 @@ where
  "style",
  bumpalo::format!(
  in bump,
  - "width: {}; height: {}; max-width: {}px; align-items: {}; justify-content: {}",
  - width,
  - height,
  - self.max_width,
  - align_items,
  - justify_content
  + "width: {}; height: {}; max-width: {}; align-items: {}; justify-content: {}; background: {}; color: {}; border-width: {}px; border-color: {}; border-radius: {}px",
  + css::length(self.width),
  + css::length(self.height),
  + css::max_length(self.max_width),
  + css::align(self.horizontal_alignment),
  + css::align(self.vertical_alignment),
  + style.background.map(css::background).unwrap_or(String::from("initial")),
  + style.text_color.map(css::color).unwrap_or(String::from("inherit")),
  + style.border_width,
  + css::color(style.border_color),
  + style.border_radius
  )
  .into_bump_str(),
  )
  