Add documentation for .expanded to grid page

diff --git a/docs/pages/grid.md b/docs/pages/grid.md
index 58f9fa47f7811ecaa26333406be26dc3235d5750..d9e9f8c0d4d8d4e4c62ca9928302f739bc5ae2ec 100644 (file)
--- a/docs/pages/grid.md
+++ b/docs/pages/grid.md
@@ -156,6 +156,17 @@ If you need a full-width column to use as a container, put the `.column` and `.r
 
 ---
 
+### Fluid Row
+
+Normally, a row is always 1200 pixels wide. Make a row completely fluid by adding the `.expanded` class.
+
+```html
+<div class="expanded row">
+</div>
+```
+
+---
+
 ### Nesting
 
 You can nest the grids indefinitely, though at a certain point it will get absurd.