diff --git a/poetry.lock b/poetry.lock
index 0bdbd738c..c1d1edef8 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -52,7 +52,7 @@ python-versions = ">=3.5"
 
 [[package]]
 name = "atomicwrites"
-version = "1.4.0"
+version = "1.4.1"
 description = "Atomic file writes."
 category = "dev"
 optional = false
@@ -208,7 +208,7 @@ dev = ["twine", "markdown", "flake8", "wheel"]
 
 [[package]]
 name = "griffe"
-version = "0.21.0"
+version = "0.22.0"
 description = "Signatures for entire Python programs. Extract the structure, the frame, the skeleton of your project, to generate API documentation or find breaking changes in your API."
 category = "dev"
 optional = false
@@ -345,7 +345,7 @@ mkdocs = ">=1.1"
 
 [[package]]
 name = "mkdocs-material"
-version = "8.3.8"
+version = "8.3.9"
 description = "Documentation that simply works"
 category = "dev"
 optional = false
@@ -713,7 +713,7 @@ python-versions = ">=3.6"
 
 [[package]]
 name = "typing-extensions"
-version = "4.2.0"
+version = "4.3.0"
 description = "Backported and Experimental Type Hints for Python 3.7+"
 category = "main"
 optional = false
@@ -721,7 +721,7 @@ python-versions = ">=3.7"
 
 [[package]]
 name = "virtualenv"
-version = "20.15.0"
+version = "20.15.1"
 description = "Virtual Python Environment builder"
 category = "dev"
 optional = false
@@ -869,10 +869,7 @@ asynctest = [
     {file = "asynctest-0.13.0-py3-none-any.whl", hash = "sha256:5da6118a7e6d6b54d83a8f7197769d046922a44d2a99c21382f0a6e4fadae676"},
     {file = "asynctest-0.13.0.tar.gz", hash = "sha256:c27862842d15d83e6a34eb0b2866c323880eb3a75e4485b079ea11748fd77fac"},
 ]
-atomicwrites = [
-    {file = "atomicwrites-1.4.0-py2.py3-none-any.whl", hash = "sha256:6d1784dea7c0c8d4a5172b6c620f40b6e4cbfdf96d783691f2e1302a7b88e197"},
-    {file = "atomicwrites-1.4.0.tar.gz", hash = "sha256:ae70396ad1a434f9c7046fd2dd196fc04b12f9e91ffb859164193be8b6168a7a"},
-]
+atomicwrites = []
 attrs = [
     {file = "attrs-21.4.0-py2.py3-none-any.whl", hash = "sha256:2d27e3784d7a565d36ab851fe94887c5eccd6a463168875832a1be79c82828b4"},
     {file = "attrs-21.4.0.tar.gz", hash = "sha256:626ba8234211db98e869df76230a137c4c40a12d72445c45d5f5b716f076e2fd"},
@@ -1042,10 +1039,7 @@ ghp-import = [
     {file = "ghp-import-2.1.0.tar.gz", hash = "sha256:9c535c4c61193c2df8871222567d7fd7e5014d835f97dc7b7439069e2413d343"},
     {file = "ghp_import-2.1.0-py3-none-any.whl", hash = "sha256:8337dd7b50877f163d4c0289bc1f1c7f127550241988d568c1db512c4324a619"},
 ]
-griffe = [
-    {file = "griffe-0.21.0-py3-none-any.whl", hash = "sha256:e9fb5eeb7c721e1d84804452bdc742bd57b120b13aba663157668ae2d217088a"},
-    {file = "griffe-0.21.0.tar.gz", hash = "sha256:61ab3bc02b09afeb489f1aef44c646a09f1837d9cdf15943ac6021903a4d3984"},
-]
+griffe = []
 identify = [
     {file = "identify-2.5.1-py2.py3-none-any.whl", hash = "sha256:0dca2ea3e4381c435ef9c33ba100a78a9b40c0bab11189c7cf121f75815efeaa"},
     {file = "identify-2.5.1.tar.gz", hash = "sha256:3d11b16f3fe19f52039fb7e39c9c884b21cb1b586988114fbe42671f03de3e82"},
@@ -1124,10 +1118,7 @@ mkdocs-autorefs = [
     {file = "mkdocs-autorefs-0.4.1.tar.gz", hash = "sha256:70748a7bd025f9ecd6d6feeba8ba63f8e891a1af55f48e366d6d6e78493aba84"},
     {file = "mkdocs_autorefs-0.4.1-py3-none-any.whl", hash = "sha256:a2248a9501b29dc0cc8ba4c09f4f47ff121945f6ce33d760f145d6f89d313f5b"},
 ]
-mkdocs-material = [
-    {file = "mkdocs-material-8.3.8.tar.gz", hash = "sha256:b9cd305c3c29ef758931dae06e4aea0ca9f8bcc8ac6b2d45f10f932a015d6b83"},
-    {file = "mkdocs_material-8.3.8-py2.py3-none-any.whl", hash = "sha256:949c75fa934d4b9ecc7b519964e58f0c9fc29f2ceb04736c85809cdbc403dfb5"},
-]
+mkdocs-material = []
 mkdocs-material-extensions = [
     {file = "mkdocs-material-extensions-1.0.3.tar.gz", hash = "sha256:bfd24dfdef7b41c312ede42648f9eb83476ea168ec163b613f9abd12bbfddba2"},
     {file = "mkdocs_material_extensions-1.0.3-py3-none-any.whl", hash = "sha256:a82b70e533ce060b2a5d9eb2bc2e1be201cf61f901f93704b4acf6e3d5983a44"},
@@ -1468,14 +1459,8 @@ typed-ast = [
     {file = "typed_ast-1.5.4-cp39-cp39-win_amd64.whl", hash = "sha256:0fdbcf2fef0ca421a3f5912555804296f0b0960f0418c440f5d6d3abb549f3e1"},
     {file = "typed_ast-1.5.4.tar.gz", hash = "sha256:39e21ceb7388e4bb37f4c679d72707ed46c2fbf2a5609b8b8ebc4b067d977df2"},
 ]
-typing-extensions = [
-    {file = "typing_extensions-4.2.0-py3-none-any.whl", hash = "sha256:6657594ee297170d19f67d55c05852a874e7eb634f4f753dbd667855e07c1708"},
-    {file = "typing_extensions-4.2.0.tar.gz", hash = "sha256:f1c24655a0da0d1b67f07e17a5e6b2a105894e6824b92096378bb3668ef02376"},
-]
-virtualenv = [
-    {file = "virtualenv-20.15.0-py2.py3-none-any.whl", hash = "sha256:804cce4de5b8a322f099897e308eecc8f6e2951f1a8e7e2b3598dff865f01336"},
-    {file = "virtualenv-20.15.0.tar.gz", hash = "sha256:4c44b1d77ca81f8368e2d7414f9b20c428ad16b343ac6d226206c5b84e2b4fcc"},
-]
+typing-extensions = []
+virtualenv = []
 watchdog = [
     {file = "watchdog-2.1.9-cp310-cp310-macosx_10_9_universal2.whl", hash = "sha256:a735a990a1095f75ca4f36ea2ef2752c99e6ee997c46b0de507ba40a09bf7330"},
     {file = "watchdog-2.1.9-cp310-cp310-macosx_10_9_x86_64.whl", hash = "sha256:6b17d302850c8d412784d9246cfe8d7e3af6bcd45f958abb2d08a6f8bedf695d"},
diff --git a/reference/box.monopic b/reference/box.monopic
new file mode 100644
index 000000000..064eb03e4
Binary files /dev/null and b/reference/box.monopic differ
diff --git a/sandbox/buttons.css b/sandbox/buttons.css
index cedf20ded..0d34ebf9e 100644
--- a/sandbox/buttons.css
+++ b/sandbox/buttons.css
@@ -1,4 +1,6 @@
+
 Button {
-    padding-left: 1;
-    padding-right: 1;
+    box-sizing: border-box;
+    margin: 1;
+    width: 100%;
 }
diff --git a/sandbox/will/basic.css b/sandbox/will/basic.css
index 0624e0846..3046a1018 100644
--- a/sandbox/will/basic.css
+++ b/sandbox/will/basic.css
@@ -6,14 +6,6 @@
     transition: color 300ms linear, background 300ms linear;
 }
 
-* {
-  scrollbar-background: $panel-darken-2;
-  scrollbar-background-hover: $panel-darken-3;
-  scrollbar-color: $system;
-  scrollbar-color-active: $accent-darken-1;
-  scrollbar-size-horizontal: 1;
-  scrollbar-size-vertical: 2;
-}
 
 *:hover {
   /* tint: 30% red;  
@@ -74,8 +66,8 @@ DataTable {
 }
 
 #header {
-  color: $text-primary-darken-1;
-  background: $primary-darken-1;
+  color: $text-primary-background-darken-1;
+  background: $primary-background-darken-1;
   height: 3;
   content-align: center middle;
 }
@@ -92,7 +84,7 @@ Tweet {
   height:12;
   width: 100%;
  
-  margin: 1 3;
+  
   background: $panel;
   color: $text-panel;
   layout: vertical;
@@ -117,7 +109,6 @@ Tweet {
 
 .code {  
   height: auto;
-    
 }
 
 
@@ -172,7 +163,7 @@ Tweet.scroll-horizontal TweetBody {
   color: $text-accent;
   background: $accent;
   height: 1;
-  border-top: hkey $accent-darken-2;
+  
   content-align: center middle;
 }
 
@@ -191,12 +182,12 @@ OptionItem {
 
 OptionItem:hover {
   height: 3;
-  color: $accent;
+  color: $secondary;
   background: $primary-background-darken-1;
   /* border-top: hkey $accent2-darken-3;
   border-bottom: hkey $accent2-darken-3; */
   text-style: bold;
-  border-left: outer $accent-darken-2;
+  border-left: outer $secondary-darken-2;
 }
 
 Error {
@@ -204,10 +195,10 @@ Error {
   height:3;
   background: $error;
   color: $text-error;
-  border-top: hkey $error-darken-2;
-  border-bottom: hkey $error-darken-2;
-  margin: 1 3;
-
+  border-top: wide $error-darken-1;
+  border-bottom: wide $error-darken-1;
+  
+  padding: 0;
   text-style: bold;
   align-horizontal: center;
 }
@@ -217,9 +208,9 @@ Warning {
   height:3;
   background: $warning;
   color: $text-warning-fade-1;
-  border-top: hkey $warning-darken-2;
-  border-bottom: hkey $warning-darken-2;
-  margin: 1 2;
+  border-top: wide $warning-darken-1;
+  border-bottom: wide $warning-darken-1;
+  
   text-style: bold;
   align-horizontal: center;
 }
@@ -229,13 +220,14 @@ Success {
   width:90%;
   height:auto;  
   box-sizing: border-box;
-  background: $success-lighten-3;
-  color: $text-success-lighten-3-fade-1;
+  background: $success;
+  color: $text-success;  
   
-  border-top: hkey $success;
-  border-bottom: hkey $success;
+  border-top: hkey $success-darken-1;
+  border-bottom: hkey $success-darken-1; 
+
+  text-style: bold underline;
 
-  text-style: bold;
   align-horizontal: center;
 }
 
diff --git a/sandbox/will/basic.py b/sandbox/will/basic.py
index 98d186b41..12fcb8846 100644
--- a/sandbox/will/basic.py
+++ b/sandbox/will/basic.py
@@ -88,7 +88,7 @@ class Warning(Widget):
 
 class Success(Widget):
     def render(self) -> Text:
-        return Text("This\nis\na\nsuccess\n message", justify="center")
+        return Text("This is a success  message", justify="center")
 
 
 class BasicApp(App, css_path="basic.css"):
diff --git a/src/textual/_styles_cache.py b/src/textual/_styles_cache.py
index dde15bf72..e9b467166 100644
--- a/src/textual/_styles_cache.py
+++ b/src/textual/_styles_cache.py
@@ -225,8 +225,7 @@ class StylesCache:
 
         from_color = Style.from_color
 
-        rich_style = styles.rich_style
-        inner = from_color(bgcolor=background.rich_color) + rich_style
+        inner = from_color(bgcolor=(base_background + background).rich_color)
         outer = from_color(bgcolor=base_background.rich_color)
 
         def post(segments: Iterable[Segment]) -> list[Segment]:
@@ -265,9 +264,7 @@ class StylesCache:
         elif (pad_top and y < gutter.top) or (
             pad_bottom and y >= height - gutter.bottom
         ):
-            background_style = from_color(
-                color=rich_style.color, bgcolor=background.rich_color
-            )
+            background_style = from_color(bgcolor=background.rich_color)
             left_style = from_color(color=border_left_color.rich_color)
             left = get_box(border_left, inner, outer, left_style)[1][0]
             right_style = from_color(color=border_right_color.rich_color)
diff --git a/src/textual/app.py b/src/textual/app.py
index 3b575e566..156b2a16b 100644
--- a/src/textual/app.py
+++ b/src/textual/app.py
@@ -85,12 +85,13 @@ DEFAULT_COLORS = ColorSystem(
     secondary="#ffa62b",
     warning="#ffa62b",
     error="#ba3c5b",
-    success="#6d9f71",
-    accent="#ffa62b",
+    success="#4EBF71",
+    accent="#1A75B4",
     system="#5a4599",
     dark_surface="#292929",
 )
 
+
 ComposeResult = Iterable[Widget]
 
 
diff --git a/src/textual/box_model.py b/src/textual/box_model.py
index 3f75e61f3..0acbfe134 100644
--- a/src/textual/box_model.py
+++ b/src/textual/box_model.py
@@ -62,7 +62,7 @@ def get_box_model(
     else:
         # An explicit width
         content_width = styles.width.resolve_dimension(
-            sizing_container, viewport, fraction_unit
+            sizing_container - styles.margin.totals, viewport, fraction_unit
         )
         if is_border_box:
             content_width -= gutter.width
diff --git a/src/textual/css/_style_properties.py b/src/textual/css/_style_properties.py
index e3ffd4141..101125bf8 100644
--- a/src/textual/css/_style_properties.py
+++ b/src/textual/css/_style_properties.py
@@ -834,10 +834,10 @@ class ColorProperty:
         _rich_traceback_omit = True
         if color is None:
             if obj.clear_rule(self.name):
-                obj.refresh()
+                obj.refresh(children=True)
         elif isinstance(color, Color):
             if obj.set_rule(self.name, color):
-                obj.refresh()
+                obj.refresh(children=True)
         elif isinstance(color, str):
             try:
                 parsed_color = Color.parse(color)
@@ -849,7 +849,7 @@ class ColorProperty:
                     ),
                 )
             if obj.set_rule(self.name, parsed_color):
-                obj.refresh()
+                obj.refresh(children=True)
         else:
             raise StyleValueError(f"Invalid color value {color}")
 
diff --git a/src/textual/css/constants.py b/src/textual/css/constants.py
index 102e7eb42..d8784c519 100644
--- a/src/textual/css/constants.py
+++ b/src/textual/css/constants.py
@@ -43,6 +43,7 @@ VALID_STYLE_FLAGS: Final = {
     "none",
     "not",
     "bold",
+    "blink",
     "italic",
     "underline",
     "overline",
@@ -50,7 +51,9 @@ VALID_STYLE_FLAGS: Final = {
     "b",
     "i",
     "u",
+    "uu",
     "o",
+    "reverse",
 }
 
 NULL_SPACING: Final = Spacing.all(0)
diff --git a/src/textual/css/styles.py b/src/textual/css/styles.py
index 4d0ab347d..333f62d3c 100644
--- a/src/textual/css/styles.py
+++ b/src/textual/css/styles.py
@@ -178,6 +178,8 @@ class StylesBase(ABC):
         "scrollbar_background_active",
     }
 
+    node: DOMNode | None = None
+
     display = StringEnumProperty(VALID_DISPLAY, "block", layout=True)
     visibility = StringEnumProperty(VALID_VISIBILITY, "visible")
     layout = LayoutProperty()
@@ -325,11 +327,12 @@ class StylesBase(ABC):
         """
 
     @abstractmethod
-    def refresh(self, *, layout: bool = False) -> None:
+    def refresh(self, *, layout: bool = False, children: bool = False) -> None:
         """Mark the styles as requiring a refresh.
 
         Args:
             layout (bool, optional): Also require a layout. Defaults to False.
+            children (bool, opional): Also refresh children. Defaults to False.
         """
 
     @abstractmethod
@@ -439,7 +442,6 @@ class StylesBase(ABC):
 class Styles(StylesBase):
 
     node: DOMNode | None = None
-
     _rules: RulesMap = field(default_factory=dict)
 
     important: set[str] = field(default_factory=set)
@@ -486,9 +488,12 @@ class Styles(StylesBase):
     def get_rule(self, rule: str, default: object = None) -> object:
         return self._rules.get(rule, default)
 
-    def refresh(self, *, layout: bool = False) -> None:
+    def refresh(self, *, layout: bool = False, children: bool = False) -> None:
         if self.node is not None:
             self.node.refresh(layout=layout)
+            if children:
+                for child in self.node.walk_children(with_self=False):
+                    child.refresh(layout=layout)
 
     def reset(self) -> None:
         """Reset the rules to initial state."""
@@ -783,8 +788,8 @@ class RenderStyles(StylesBase):
             if self.has_rule(rule_name):
                 yield rule_name, getattr(self, rule_name)
 
-    def refresh(self, *, layout: bool = False) -> None:
-        self._inline_styles.refresh(layout=layout)
+    def refresh(self, *, layout: bool = False, children: bool = False) -> None:
+        self._inline_styles.refresh(layout=layout, children=children)
 
     def merge(self, other: Styles) -> None:
         """Merge values from another Styles.
diff --git a/src/textual/css/tokenizer.py b/src/textual/css/tokenizer.py
index 958d1ca32..0860e3d25 100644
--- a/src/textual/css/tokenizer.py
+++ b/src/textual/css/tokenizer.py
@@ -143,7 +143,7 @@ class Token(NamedTuple):
         yield "name", self.name
         yield "value", self.value
         yield "path", self.path
-        yield "code", self.code
+        yield "code", self.code if len(self.code) < 40 else self.code[:40] + "..."
         yield "location", self.location
         yield "referenced_by", self.referenced_by, None
 
diff --git a/src/textual/layout.py b/src/textual/layout.py
index 4c900a593..82db0e7da 100644
--- a/src/textual/layout.py
+++ b/src/textual/layout.py
@@ -7,6 +7,7 @@ class Vertical(Widget):
     CSS = """
     Vertical {
         layout: vertical;       
+        overflow: auto;
     }    
     """
 
@@ -17,5 +18,6 @@ class Horizontal(Widget):
     CSS = """
     Horizontal {
         layout: horizontal;
+        overflow: auto;
     }    
     """
diff --git a/src/textual/scrollbar.py b/src/textual/scrollbar.py
index fb4f810dd..d70faca32 100644
--- a/src/textual/scrollbar.py
+++ b/src/textual/scrollbar.py
@@ -212,18 +212,16 @@ class ScrollBar(Widget):
 
     def render(self) -> RenderableType:
         styles = self.parent.styles
-        scrollbar_style = Style(
-            bgcolor=(
-                styles.scrollbar_background_hover.rich_color
-                if self.mouse_over
-                else styles.scrollbar_background.rich_color
-            ),
-            color=(
-                styles.scrollbar_color_active.rich_color
-                if self.grabbed
-                else styles.scrollbar_color.rich_color
-            ),
+        background = (
+            styles.scrollbar_background_hover
+            if self.mouse_over
+            else styles.scrollbar_background
         )
+        color = (
+            styles.scrollbar_color_active if self.grabbed else styles.scrollbar_color
+        )
+        color = background + color
+        scrollbar_style = Style.from_color(color.rich_color, background.rich_color)
         return ScrollBarRender(
             virtual_size=self.window_virtual_size,
             window_size=self.window_size,
diff --git a/src/textual/widget.py b/src/textual/widget.py
index d2bd56a5b..e3d2dac5f 100644
--- a/src/textual/widget.py
+++ b/src/textual/widget.py
@@ -16,9 +16,11 @@ import rich.repr
 from rich.align import Align
 from rich.console import Console, RenderableType
 from rich.measure import Measurement
-from rich.padding import Padding
+
 from rich.segment import Segment
 from rich.style import Style
+from rich.styled import Styled
+from rich.text import Text
 
 from . import errors, events, messages
 from ._animator import BoundAnimator
@@ -72,10 +74,9 @@ class Widget(DOMNode):
         scrollbar-background: $panel-darken-2;
         scrollbar-background-hover: $panel-darken-3;
         scrollbar-color: $system;
-        scrollbar-color-active: $secondary-darken-1;
+        scrollbar-color-active: $warning-darken-1;
         scrollbar-size-vertical: 2;
         scrollbar-size-horizontal: 1;
-
     }
     """
 
@@ -879,54 +880,7 @@ class Widget(DOMNode):
     def watch(self, attribute_name, callback: Callable[[Any], Awaitable[None]]) -> None:
         watch(self, attribute_name, callback)
 
-    def _style_renderable(self, renderable: RenderableType) -> RenderableType:
-        """Applies CSS styles to a renderable by wrapping it in another renderable.
-
-        Args:
-            renderable (RenderableType): Renderable to apply styles to.
-
-        Returns:
-            RenderableType: An updated renderable.
-        """
-        (base_background, base_color), (background, color) = self.colors
-        styles = self.styles
-
-        content_align = (styles.content_align_horizontal, styles.content_align_vertical)
-        if content_align != ("left", "top"):
-            horizontal, vertical = content_align
-            renderable = Align(renderable, horizontal, vertical=vertical)
-
-        renderable = Padding(
-            renderable,
-            styles.padding,
-            style=Style.from_color(color.rich_color, background.rich_color),
-        )
-
-        if styles.border:
-            renderable = Border(
-                renderable,
-                styles.border,
-                inner_color=background,
-                outer_color=base_background,
-            )
-
-        if styles.outline:
-            renderable = Border(
-                renderable,
-                styles.outline,
-                inner_color=styles.background,
-                outer_color=base_background,
-                outline=True,
-            )
-
-        if styles.tint.a != 0:
-            renderable = Tint(renderable, styles.tint)
-        if styles.opacity != 1.0:
-            renderable = Opacity(renderable, opacity=styles.opacity)
-
-        return renderable
-
-    def render_styled(self) -> RenderableType:
+    def _render_styled(self) -> RenderableType:
         """Applies style attributes to the default renderable.
 
         Returns:
@@ -934,8 +888,21 @@ class Widget(DOMNode):
         """
 
         renderable = self.render()
+
+        if isinstance(renderable, str):
+            renderable = Text.from_markup(renderable)
+
+        rich_style = self.rich_style
+        if isinstance(renderable, Text):
+            renderable.stylize(rich_style)
+        else:
+            renderable = Styled(renderable, rich_style)
+
         styles = self.styles
-        content_align = (styles.content_align_horizontal, styles.content_align_vertical)
+        content_align = (
+            styles.content_align_horizontal,
+            styles.content_align_vertical,
+        )
         if content_align != ("left", "top"):
             horizontal, vertical = content_align
             renderable = Align(renderable, horizontal, vertical=vertical)
@@ -977,11 +944,11 @@ class Widget(DOMNode):
     def _render_content(self) -> None:
         """Render all lines."""
         width, height = self.size
-        renderable = self.render_styled()
+        renderable = self._render_styled()
         options = self.console.options.update_dimensions(width, height).update(
             highlight=False
         )
-        lines = self.console.render_lines(renderable, options, style=self.rich_style)
+        lines = self.console.render_lines(renderable, options)
         self._render_cache = RenderCache(self.size, lines)
         self._dirty_regions.clear()
 
diff --git a/src/textual/widgets/_button.py b/src/textual/widgets/_button.py
index c8f90f834..e9856d949 100644
--- a/src/textual/widgets/_button.py
+++ b/src/textual/widgets/_button.py
@@ -33,145 +33,96 @@ class Button(Widget, can_focus=True):
     Button {
         width: auto;
         height: 3;
-
         background: $primary;
-        color: $text-primary;
-        border: tall $primary-lighten-3;
+        color: $text-primary;        
+        border: none;
+        border-top: tall $primary-lighten-2;
+        border-bottom: tall $primary-darken-3;
+        content-align: center middle;        
+        text-style: bold;      
+    }
 
-        content-align: center middle;
-        margin: 1 0;
-        align: center middle;
-        text-style: bold;
-
-        transition: background 0.1;/* for "active" effect */
+    Button:focus {
+        text-style: bold underline;        
     }
 
     Button:hover {
+        border-top: tall $primary-lighten-1;
         background: $primary-darken-2;
-        color: $text-primary-darken-2;
-        border: tall $primary-lighten-1;
+        color: $text-primary-darken-2;       
     }
 
     Button.-active {
-        background: $primary-lighten-1;
+        background: $primary;
+        border-bottom: tall $primary-lighten-2;
+        border-top: tall $primary-darken-2;                
     }
 
-    .-dark-mode Button {
-        background: $background;
-        color: $primary-lighten-2;
-        border: tall white $primary-lighten-2;
-    }
-
-    .-dark-mode Button:hover {
-        background: $surface;
-    }
-
-    .-dark-mode Button.-active {
-        background: $background-lighten-3;
-    }
 
     /* Success variant */
     Button.-success {
         background: $success;
         color: $text-success;
-        border: tall $success-lighten-3;
+        border-top: tall $success-lighten-2;
+        border-bottom: tall $success-darken-3;
+      
     }
 
     Button.-success:hover {
-        background: $success-darken-1;
-        color: $text-success-darken-1;
-        border: tall $success-lighten-2;
+        background: $success-darken-2;
+        color: $text-success-darken-2;
+
     }
 
     Button.-success.-active {
-        background: $success-lighten-1;
-    }
-
-    .-dark-mode Button.-success {
         background: $success;
-        color: $text-success;
-        border: tall $success-lighten-3;
-    }
-
-    .-dark-mode Button.-success:hover {
-        background: $success-darken-1;
-        color: $text-success-darken-1;
-        border: tall $success-lighten-3;
-    }
-
-    .-dark-mode Button.-success.-active {
-        background: $success-lighten-1;
+        border-bottom: tall $success-lighten-2;
+        border-top: tall $success-darken-2;
     }
 
+   
     /* Warning variant */
     Button.-warning {
         background: $warning;
-        color: $text-warning;
-        border: tall $warning-lighten-3;
+        color: $text-warning;       
+        border-top: tall $warning-lighten-2;
+        border-bottom: tall $warning-darken-3;
     }
 
     Button.-warning:hover {
-        background: $warning-darken-1;
+        background: $warning-darken-2;
         color: $text-warning-darken-1;
-        border: tall $warning-lighten-3;
+       
     }
 
     Button.-warning.-active {
         background: $warning;
+        border-bottom: tall $warning-lighten-2;
+        border-top: tall $warning-darken-2;
     }
-
-    .-dark-mode Button.-warning {
-        background: $warning;
-        color: $text-warning;
-        border: tall $warning-lighten-3;
-    }
-
-    .-dark-mode Button.-warning:hover {
-        background: $warning-darken-1;
-        color: $text-warning-darken-1;
-        border: tall $warning-lighten-3;
-    }
-
-    .-dark-mode Button.-warning.-active {
-        background: $warning-lighten-1;
-    }
+   
 
     /* Error variant */
     Button.-error {
         background: $error;
         color: $text-error;
-        border: tall $error-lighten-3;
+        border-top: tall $error-lighten-2;
+        border-bottom: tall $error-darken-3;
+     
     }
 
     Button.-error:hover {
         background: $error-darken-1;
-        color: $text-error-darken-1;
-        border: tall $error-lighten-3;
+        color: $text-error-darken-2;
+
     }
 
     Button.-error.-active {
         background: $error;
+        border-bottom: tall $error-lighten-2;
+        border-top: tall $error-darken-2;
     }
 
-    .-dark-mode Button.-error {
-        background: $error;
-        color: $text-error;
-        border: tall $error-lighten-3;
-    }
-
-    .-dark-mode Button.-error:hover {
-        background: $error-darken-1;
-        color: $text-error-darken-1;
-        border: tall $error-lighten-3;
-    }
-
-    .-dark-mode Button.-error.-active {
-        background: $error;
-    }
-
-    App.-show-focus Button:focus {
-        tint: $accent 20%;
-    }
     """
 
     ACTIVE_EFFECT_DURATION = 0.3
diff --git a/src/textual/widgets/_data_table.py b/src/textual/widgets/_data_table.py
index 472c98bc1..ba955ed16 100644
--- a/src/textual/widgets/_data_table.py
+++ b/src/textual/widgets/_data_table.py
@@ -113,8 +113,8 @@ class DataTable(ScrollView, Generic[CellType]):
     }
     DataTable > .datatable--header {        
         text-style: bold;
-        background: $primary;
-        color: $text-primary;
+        background: $primary-darken-1;
+        color: $text-primary-darken-1;
     }
     DataTable > .datatable--fixed {
         text-style: bold;
diff --git a/tests/test_box_model.py b/tests/test_box_model.py
index 63f20a3ce..31bfc3212 100644
--- a/tests/test_box_model.py
+++ b/tests/test_box_model.py
@@ -49,7 +49,7 @@ def test_width():
     def get_auto_width(container: Size, parent: Size) -> int:
         return 10
 
-    def get_auto_height(container: Size, parent: Size) -> int:
+    def get_auto_height(container: Size, parent: Size, width: int) -> int:
         return 10
 
     box_model = get_box_model(
@@ -88,7 +88,7 @@ def test_width():
     box_model = get_box_model(
         styles, Size(60, 20), Size(80, 24), one, get_auto_width, get_auto_height
     )
-    assert box_model == BoxModel(Fraction(60), Fraction(16), Spacing(1, 2, 3, 4))
+    assert box_model == BoxModel(Fraction(54), Fraction(16), Spacing(1, 2, 3, 4))
 
     styles.width = "100vw"
     styles.max_width = "50%"
@@ -107,7 +107,7 @@ def test_height():
     def get_auto_width(container: Size, parent: Size) -> int:
         return 10
 
-    def get_auto_height(container: Size, parent: Size) -> int:
+    def get_auto_height(container: Size, parent: Size, width: int) -> int:
         return 10
 
     box_model = get_box_model(
@@ -139,6 +139,15 @@ def test_height():
     )
     assert box_model == BoxModel(Fraction(54), Fraction(20), Spacing(1, 2, 3, 4))
 
+    styles.height = "auto"
+    styles.margin = 2
+
+    box_model = get_box_model(
+        styles, Size(60, 20), Size(80, 24), one, get_auto_width, get_auto_height
+    )
+    assert box_model == BoxModel(Fraction(56), Fraction(10), Spacing(2, 2, 2, 2))
+
+    styles.margin = 1, 2, 3, 4
     styles.height = "100vh"
     styles.max_height = "50%"
 
diff --git a/tests/test_styles_cache.py b/tests/test_styles_cache.py
index ea892f189..d30c1cebf 100644
--- a/tests/test_styles_cache.py
+++ b/tests/test_styles_cache.py
@@ -1,6 +1,7 @@
 from __future__ import annotations
 
 from rich.segment import Segment
+from rich.style import Style
 
 from textual.color import Color
 from textual.geometry import Region, Size
@@ -41,10 +42,11 @@ def test_no_styles():
         content.__getitem__,
         content_size=Size(3, 3),
     )
+    style = Style.from_color(bgcolor=Color.parse("green").rich_color)
     expected = [
-        [Segment("foo", styles.rich_style)],
-        [Segment("bar", styles.rich_style)],
-        [Segment("baz", styles.rich_style)],
+        [Segment("foo", style)],
+        [Segment("bar", style)],
+        [Segment("baz", style)],
     ]
     assert lines == expected