Add section to docs explaining our stance on validators

diff --git a/docs/_includes/getting-started/browser-device-support.html b/docs/_includes/getting-started/browser-device-support.html
index 6dde94bdb73ed2918fafc07fefb220492e1e308f..f55bd0be37d260a67bc1c10748cf20c9246a7a23 100644 (file)
--- a/docs/_includes/getting-started/browser-device-support.html
+++ b/docs/_includes/getting-started/browser-device-support.html
@@ -189,4 +189,9 @@ $(function () {
 </script>
 {% endhighlight %}
   <p>Want to see an example? <a href="http://jsbin.com/kuvoz/1">Check out this JS Bin demo.</a></p>
+
+  <h3 id="support-validators">Validators</h3>
+  <p>In order to provide the best possible experience to old and buggy browsers, Bootstrap uses <a href="http://browserhacks.com">CSS browser hacks</a> in several places to target special CSS to certain browser versions in order to work around bugs in the browsers themselves. These hacks understandably cause CSS validators to complain that they are invalid. In a couple places, we also use bleeding-edge CSS features that aren't yet fully standardized, but these are used purely for progressive enhancement.</p>
+  <p>These validation warnings don't matter in practice since the non-hacky portion of our CSS does fully validate and the hacky portions don't interfere with the proper functioning of the non-hacky portion, hence why we deliberately ignore these particular warnings.</p>
+  <p>Our HTML docs likewise have some trivial and inconsequential HTML validation warnings due to our inclusion of <a href="#support-ie-compatibility-modes">X-UA-Compatible <code>&lt;meta&gt;</code> tags</a> to avoid Internet Explorer issues and our inclusion of a workaround for <a href="https://bugzilla.mozilla.org/show_bug.cgi?id=654072">a certain Firefox bug</a>.</p>
 </div>

diff --git a/docs/_includes/nav/getting-started.html b/docs/_includes/nav/getting-started.html
index 54927c22ae21ba15c315c693092ef7e869cde208..4ae8777c79e7ce829eac5b0e9e13378e0ca61a8f 100644 (file)
--- a/docs/_includes/nav/getting-started.html
+++ b/docs/_includes/nav/getting-started.html
@@ -52,6 +52,7 @@
     <li><a href="#support-browser-zooming">Browser zooming</a></li>
     <li><a href="#support-printing">Printer viewports</a></li>
     <li><a href="#support-android-stock-browser">Android stock browser</a></li>
+    <li><a href="#support-validators">Validators</a></li>
   </ul>
 </li>
 <li>