Complete integer reference.

docs/styles/css_units/integer.md

@@ -1 +1,30 @@
 # Integer
+
+An integer unit.
+
+## Syntax
+
+Any legal integer, like `-10` or `42`.
+Integer units can be negative, althought that may not make sense in some rules.
+
+## Examples
+
+```css
+Widget {
+    margin: -5 10;
+}
+```
+
+```py
+widget.styles.offset = (-5, 10)
+```
+
+## Used by
+
+ - Grids:
+    - [`grid-size`](../grid/grid_size.md)
+    - [`grid-rows`](../grid/grid_rows.md)
+    - [`grid-columns`](../grid/grid_columns.md)
+ - [`margin`](../margin.md)
+ - [`padding`](../padding.md)
+ - [`scrollbar-size`](../scrollbar_size.md)