Fix #10556

Make media queries example in docs clearer

css.html

@@ -74,7 +74,7 @@ base_url: "../"
     <p class="lead">Bootstrap includes a responsive, mobile first fluid grid system that appropriately scales up to 12 columns as the device or viewport size increases. It includes <a href="#grid-example-basic">predefined classes</a> for easy layout options, as well as powerful <a href="#grid-less">mixins for generating more semantic layouts</a>.</p>
 
     <h3 id="grid-media-queries">Media queries</h3>
-    <p>We use the following media queries to create the key breakpoints in our grid system.</p>
+    <p>We use the following media queries in our LESS files to create the key breakpoints in our grid system.</p>
 {% highlight css %}
 /* Extra small devices (phones, less than 768px) */
 /* No media query since this is the default in Bootstrap */