Update reference for min/max width/height.

docs/styles/min_width.md

@@ -1,30 +1,60 @@
 # Min-width
 
-The `min-width` rules sets a minimum width for a widget.
+The `min-width` rule sets a minimum width for a widget.
 
 ## Syntax
 
-```
-min-width: <SCALAR>;
-```
+--8<-- "docs/snippets/syntax_block_start.md"
+min-width: <a href="../css_types/scalar.md">&lt;scalar&gt;</a>;
+--8<-- "docs/snippets/syntax_block_end.md"
+
+The `min-width` rule accepts a [`<scalar>`](../css_types/scalar.md) that defines a lower bound for the [`width`](./width.md) of a widget.
+That is, the width of a widget is never allowed to be under `min-width`.
+
+### Values
+
+--8<-- "docs/snippets/type_syntax/scalar.md"
+
+## Example
+
+The example below shows some placeholders with their width set to `50%`.
+Then, we set `min-width` individually on each placeholder.
+
+=== "Output"
+
+    ```{.textual path="docs/examples/styles/min_width.py"}
+    ```
+
+=== "min_width.py"
+
+    ```py
+    --8<-- "docs/examples/styles/min_width.py"
+    ```
+
+=== "min_width.css"
+
+    ```css hl_lines="13"
+    --8<-- "docs/examples/styles/min_width.css"
+    ```
+
+    1. This won't affect the placeholder because its width is larger than the minimum width.
 
 ## CSS
 
 ```sass
-
-/* Set a minimum width of 10 cells */
+/* Set the minimum width to 10 rows */
 min-width: 10;
 
-/* Set a minimum width of 25% of the screen width */
-min-width: 25vw;
+/* Set the minimum width to 25% of the viewport width */
+min-width: 25vh;
 ```
 
 ## Python
 
 ```python
-# Set the minimum width to 10 cells
+# Set the minimum width to 10 rows
 widget.styles.min_width = 10
 
-# Set the minimum width to 25% of the screen width
-widget.styles.min_width = "25vw"
+# Set the minimum width to 25% of the viewport width
+widget.styles.min_width = "25vh"
 ```