diff --git a/README.md b/README.md
index 12bccb6..d8d1e52 100644
--- a/README.md
+++ b/README.md
@@ -40,16 +40,13 @@ Boilerplate for [`Charcoal`](#http://charcoal.locomotive.ca) projects by Locomot
 
 We are using a simple inline-block grid system.
 
-**Simple usage**
+**Usage**
 
-Insert a `.grid` block and add `.grid__item` elements inside it. 
+Insert a `%grid` block and add `%grid__item` elements inside it. 
+No rows that contain floats, no twelve columns system; just the number of items you want, with fractions like names helpers *(ex: `%third`, `%two-thirds`)*, inside a single block.
 
-No rows that contain floats, no twelve columns system; just the number of items you want, with fractions like names *(ex: `.third`, `.two-thirds`)*, inside a single block.
-
-**Extended usage**
-
-- Extend the classes for more semantic ones to your components or use the classes as is. 
-- Create custom width grid items by extending the `grid__item` class and adding widths in a fraction format, with the `span()` function.
-- Add media queries with the `$from` and `$to` variables to change the grid items widths, for your content, on different screen sizes.
+- Extend the placeholder selectors *(`%`)* for more semantic ones to your components. 
+- Create custom width grid items by extending the `%grid__item` and adding widths in a fraction format, with the `span()` function.
+- Add media queries, on the helpers selectors or on your custom components, with the `$from` and `$to` variables to change the grid items widths, for your content, on different screen sizes .
 
 *[Demo](http://codepen.io/AntoineBoulanger/pen/EaLNxe)*