Initial docs for text-justify CSS property

docs/styles/text_justify.md

@@ -0,0 +1,40 @@
+# Text-justify
+
+The `text-justify` rule justifies text within a widget.
+
+## Syntax
+
+```
+text-justify: [left|center|right|full];
+```
+
+### Values
+
+| Value    | Description                         |
+|----------|-------------------------------------|
+| `left`   | Left justifies text in the widget   |
+| `center` | Center justifies text in the widget |
+| `right`  | Right justifies text in the widget  |
+| `full`   | Fully justifies text in the widget  |
+
+## Example
+
+In this example, we can see, from top to bottom,
+ `left`, `center`, `right`, and `full` justified text respectively.
+
+=== "text_justify.py"
+
+    ```python
+    --8<-- "docs/examples/styles/text_justify.py"
+    ```
+
+=== "text_justify.css"
+
+    ```css
+    --8<-- "docs/examples/styles/text_justify.css"
+    ```
+
+=== "Output"
+
+    ```{.textual path="docs/examples/styles/text_justify.py"}
+    ```