diff --git a/migration/index.html b/migration/index.html
index c1922c41b0..ab2db4ba45 100644
--- a/migration/index.html
+++ b/migration/index.html
@@ -63,7 +63,7 @@
       </button>
       <a href="../" class="navbar-brand">Bootstrap</a>
     </div>
-    <nav class="collapse navbar-collapse bs-navbar-collapse" role="navigation">
+    <nav class="collapse navbar-collapse bs-navbar-collapse">
       <ul class="nav navbar-nav">
         <li>
           <a href="../getting-started/">Getting started</a>
@@ -540,8 +540,8 @@
 
         </div>
         
-        <div class="col-md-3">
-          <div class="bs-docs-sidebar hidden-print hidden-xs hidden-sm" role="complementary">
+        <div class="col-md-3" role="complementary">
+          <nav class="bs-docs-sidebar hidden-print hidden-xs hidden-sm">
             <ul class="nav bs-docs-sidenav">
               
                 <li>
@@ -563,7 +563,7 @@
               Back to top
             </a>
             
-          </div>
+          </nav>
         </div>
         
       </div>
@@ -594,7 +594,7 @@
     <p>Designed and built with all the love in the world by <a href="https://twitter.com/mdo" target="_blank">@mdo</a> and <a href="https://twitter.com/fat" target="_blank">@fat</a>.</p>
     <p>Maintained by the <a href="https://github.com/orgs/twbs/people">core team</a> with the help of <a href="https://github.com/twbs/bootstrap/graphs/contributors">our contributors</a>.</p>
     <p>Code licensed under <a href="https://github.com/twbs/bootstrap/blob/master/LICENSE" target="_blank">MIT</a>, documentation under <a href="http://creativecommons.org/licenses/by/3.0/">CC BY 3.0</a>.</p>
-    <ul class="bs-docs-footer-links muted">
+    <ul class="bs-docs-footer-links text-muted">
       <li>Currently v3.3.1</li>
       <li>&middot;</li>
       <li><a href="https://github.com/twbs/bootstrap">GitHub</a></li>