diff --git a/docs/examples/simple.py b/docs/examples/simple.py
index 764afdba8..b4784ccd5 100644
--- a/docs/examples/simple.py
+++ b/docs/examples/simple.py
@@ -3,26 +3,9 @@ from textual.widgets import Static
 
 
 class TextApp(App):
-    CSS = """
-    Screen {
-        background: darkblue;
-        color: white;
-        layout: vertical;
-    }
-    Static {
-        height: auto;
-        padding: 2;
-        border: heavy white;
-        background: #ffffff 30%;
-        content-align: center middle;
-        /**/
-    }
-
-    """
-
     def compose(self) -> ComposeResult:
         yield Static("Hello")
         yield Static("[b]World![/b]")
 
 
-app = TextApp()
+app = TextApp(css_path="simple.css")
diff --git a/docs/index.md b/docs/index.md
index 8e6772806..17ac22c5f 100644
--- a/docs/index.md
+++ b/docs/index.md
@@ -16,10 +16,15 @@ Textual seeks to lower the difficulty level of building a TUI by borrowing devel
     --8<-- "docs/examples/simple.py"
     ```
 
+=== "CSS"
+
+    ```python
+    --8<-- "docs/examples/simple.css"
+    ```
+
 === "Terminal"
 
-    ```{.textual columns="40" lines="10"}
-    --8<-- "docs/examples/simple.py"
+    ```{.textual path="docs/examples/simple.py" columns="80" lines="24"}
     ```
 
 Textual also offers a number of enhancements over traditional TUI applications by taking advantage of improvements to terminal software and the hardware it runs on. Terminals are a far cry from their roots in ancient hardware and dial-up modems, yet much of the software that runs on them hasn't kept pace.
diff --git a/poetry.lock b/poetry.lock
index ee576a108..d0a40e58a 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -650,7 +650,7 @@ pyyaml = "*"
 
 [[package]]
 name = "rich"
-version = "12.4.2"
+version = "12.4.3"
 description = "Render rich text, tables, progress bars, syntax highlighting, markdown and more to the terminal"
 category = "main"
 optional = false
@@ -773,7 +773,7 @@ testing = ["pytest (>=6)", "pytest-checkdocs (>=2.4)", "pytest-flake8", "pytest-
 [metadata]
 lock-version = "1.1"
 python-versions = "^3.7"
-content-hash = "f84a265bad38b0894c5f13b1f1abeec5b5a9f4aab3aab44d90e761103a756743"
+content-hash = "eba121f02e102fd9c551a654bcfab3028ec4fc05fe9b4cf7d5f64002e3586ba0"
 
 [metadata.files]
 aiohttp = [
@@ -1360,8 +1360,8 @@ pyyaml-env-tag = [
     {file = "pyyaml_env_tag-0.1.tar.gz", hash = "sha256:70092675bda14fdec33b31ba77e7543de9ddc88f2e5b99160396572d11525bdb"},
 ]
 rich = [
-    {file = "rich-12.4.2-py3-none-any.whl", hash = "sha256:abcecd4444fa27cf84de412f713305e0d5481c941f12fc202fa4fc6711f80feb"},
-    {file = "rich-12.4.2.tar.gz", hash = "sha256:cd8c809da089740f4bd94fa6d544cf23421d4bad34988569c2d03fdbdb858f0d"},
+    {file = "rich-12.4.3-py3-none-any.whl", hash = "sha256:26ef784599a9ab905ade34ff28904e4fbe9bce16e02c33c78b0229551104c146"},
+    {file = "rich-12.4.3.tar.gz", hash = "sha256:e7550ca19aec51b216ae4c34bfce82e94a0c79bdbf95cafbf42f343d0fb3f45a"},
 ]
 six = [
     {file = "six-1.16.0-py2.py3-none-any.whl", hash = "sha256:8abb2f1d86890a2dfb989f9a77cfcfd3e47c2a354b01111771326f8aa26e0254"},
diff --git a/pyproject.toml b/pyproject.toml
index 57089f7fa..fb8460d6b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -22,9 +22,8 @@ textual = "textual.cli.cli:run"
 
 [tool.poetry.dependencies]
 python = "^3.7"
-rich = "^12.4.2"
-
-#rich = {git = "git@github.com:willmcgugan/rich", rev = "link-id"}
+rich = "^12.4.3"
+#rich = {path="../rich", develop=true}
 click = "8.1.2"
 importlib-metadata = "^4.11.3"
 typing-extensions = { version = "^4.0.0", python = "<3.8" }
diff --git a/src/textual/_compositor.py b/src/textual/_compositor.py
index 631292e98..f04d42888 100644
--- a/src/textual/_compositor.py
+++ b/src/textual/_compositor.py
@@ -561,14 +561,14 @@ class Compositor:
         width, height = self.size
         screen_region = Region(0, 0, width, height)
 
-        if not full:
+        if full:
+            update_regions: set[Region] = set()
+        else:
             update_regions = self._dirty_regions.copy()
             self._dirty_regions.clear()
             if screen_region in update_regions:
                 # If one of the updates is the entire screen, then we only need one update
                 update_regions.clear()
-        else:
-            update_regions = set()
 
         if update_regions:
             # Create a crop regions that surrounds all updates
diff --git a/src/textual/_doc.py b/src/textual/_doc.py
index 755eab1b5..56083ece1 100644
--- a/src/textual/_doc.py
+++ b/src/textual/_doc.py
@@ -2,13 +2,35 @@ import os
 
 
 def format_svg(source, language, css_class, options, md, attrs, **kwargs):
+
     os.environ["TEXTUAL"] = "headless"
     os.environ["TEXTUAL_SCREENSHOT"] = "0.1"
     os.environ["COLUMNS"] = attrs.get("columns", "80")
     os.environ["LINES"] = attrs.get("lines", "24")
-    app_vars = {}
-    exec(source, app_vars)
-    app = app_vars["app"]
-    app.run()
-    svg = app._screenshot
+    path = attrs.get("path")
+
+    print("PATH", path)
+    if path:
+        cwd = os.getcwd()
+        examples_path, filename = os.path.split(path)
+        print(examples_path, filename)
+        try:
+            os.chdir(examples_path)
+            with open(filename, "rt") as python_code:
+                source = python_code.read()
+            app_vars = {}
+            exec(source, app_vars)
+            app = app_vars["app"]
+            app.run()
+            svg = app._screenshot
+
+        finally:
+            os.chdir(cwd)
+
+    else:
+        app_vars = {}
+        exec(source, app_vars)
+        app = app_vars["app"]
+        app.run()
+        svg = app._screenshot
     return svg
diff --git a/src/textual/layouts/vertical.py b/src/textual/layouts/vertical.py
index e216f963d..34cabea02 100644
--- a/src/textual/layouts/vertical.py
+++ b/src/textual/layouts/vertical.py
@@ -38,7 +38,12 @@ class VerticalLayout(Layout):
         displayed_children = cast("list[Widget]", parent.displayed_children)
         for widget, box_model, margin in zip(displayed_children, box_models, margins):
             content_width, content_height = box_model.size
-            offset_x = widget.styles.align_width(content_width, size.width)
+            offset_x = (
+                widget.styles.align_width(
+                    content_width, size.width - box_model.margin.width
+                )
+                + box_model.margin.left
+            )
             region = Region(offset_x, y, content_width, content_height)
             add_placement(WidgetPlacement(region, widget, 0))
             y += region.height + margin