diff --git a/about/index.html b/about/index.html
index 50dd63c17f..586aa87e5e 100644
--- a/about/index.html
+++ b/about/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>
@@ -128,7 +128,7 @@
       <div class="list-group-item">
         <iframe class="github-btn" src="http://ghbtns.com/github-btn.html?user=mdo&amp;type=follow"></iframe>
         <a class="team-member" href="https://github.com/mdo">
-          <img src="http://www.gravatar.com/avatar/bc4ab438f7a4ce1c406aadc688427f2c" alt="@mdo">
+          <img src="http://www.gravatar.com/avatar/bc4ab438f7a4ce1c406aadc688427f2c" alt="@mdo" width="32" height="32">
           <strong>Mark Otto</strong> <small>@mdo</small>
         </a>
       </div>
@@ -136,7 +136,7 @@
       <div class="list-group-item">
         <iframe class="github-btn" src="http://ghbtns.com/github-btn.html?user=fat&amp;type=follow"></iframe>
         <a class="team-member" href="https://github.com/fat">
-          <img src="http://www.gravatar.com/avatar/a98244cbdacaf1c0b55499466002f7a8" alt="@fat">
+          <img src="http://www.gravatar.com/avatar/a98244cbdacaf1c0b55499466002f7a8" alt="@fat" width="32" height="32">
           <strong>Jacob Thornton</strong> <small>@fat</small>
         </a>
       </div>
@@ -144,7 +144,7 @@
       <div class="list-group-item">
         <iframe class="github-btn" src="http://ghbtns.com/github-btn.html?user=cvrebert&amp;type=follow"></iframe>
         <a class="team-member" href="https://github.com/cvrebert">
-          <img src="http://www.gravatar.com/avatar/edec428c425453955f770095a7d26c50" alt="@cvrebert">
+          <img src="http://www.gravatar.com/avatar/edec428c425453955f770095a7d26c50" alt="@cvrebert" width="32" height="32">
           <strong>Chris Rebert</strong> <small>@cvrebert</small>
         </a>
       </div>
@@ -152,7 +152,7 @@
       <div class="list-group-item">
         <iframe class="github-btn" src="http://ghbtns.com/github-btn.html?user=juthilo&amp;type=follow"></iframe>
         <a class="team-member" href="https://github.com/juthilo">
-          <img src="http://www.gravatar.com/avatar/0f7dd3ce58a416be5685ea6194f82b11" alt="@juthilo">
+          <img src="http://www.gravatar.com/avatar/0f7dd3ce58a416be5685ea6194f82b11" alt="@juthilo" width="32" height="32">
           <strong>Julian Thilo</strong> <small>@juthilo</small>
         </a>
       </div>
@@ -160,7 +160,7 @@
       <div class="list-group-item">
         <iframe class="github-btn" src="http://ghbtns.com/github-btn.html?user=xhmikosr&amp;type=follow"></iframe>
         <a class="team-member" href="https://github.com/xhmikosr">
-          <img src="http://www.gravatar.com/avatar/e37759b1ea0125d4e97b1e00b5eed26f" alt="@xhmikosr">
+          <img src="http://www.gravatar.com/avatar/e37759b1ea0125d4e97b1e00b5eed26f" alt="@xhmikosr" width="32" height="32">
           <strong>XhmikosR</strong> <small>@xhmikosr</small>
         </a>
       </div>
@@ -168,11 +168,19 @@
       <div class="list-group-item">
         <iframe class="github-btn" src="http://ghbtns.com/github-btn.html?user=hnrch02&amp;type=follow"></iframe>
         <a class="team-member" href="https://github.com/hnrch02">
-          <img src="http://www.gravatar.com/avatar/0d53f5d3d3d28bd470f394d98f7ef48f" alt="@hnrch02">
+          <img src="http://www.gravatar.com/avatar/0d53f5d3d3d28bd470f394d98f7ef48f" alt="@hnrch02" width="32" height="32">
           <strong>Heinrich Fenkart</strong> <small>@hnrch02</small>
         </a>
       </div>
     
+      <div class="list-group-item">
+        <iframe class="github-btn" src="http://ghbtns.com/github-btn.html?user=patrickhlauke&amp;type=follow"></iframe>
+        <a class="team-member" href="https://github.com/patrickhlauke">
+          <img src="http://www.gravatar.com/avatar/357f279672db832fc41a5a2f36559fcb" alt="@patrickhlauke" width="32" height="32">
+          <strong>Patrick H. Lauke</strong> <small>@patrickhlauke</small>
+        </a>
+      </div>
+    
   </div>
   <p>Get involved with Bootstrap development by <a href="https://github.com/twbs/bootstrap/issues/new">opening an issue</a> or submitting a pull request. Read our <a href="https://github.com/twbs/bootstrap/blob/master/CONTRIBUTING.md">contributing guidelines</a> for information on how we develop.</p>
 
@@ -230,13 +238,13 @@
   <p>Download the Bootstrap mark in one of three styles, each available as an SVG file. Right click, Save as.</p>
   <div class="bs-brand-logos">
     <div class="bs-brand-item">
-      <img class="svg" src="../assets/brand/bootstrap-solid.svg" alt="Bootstrap">
+      <img class="svg" src="../assets/brand/bootstrap-solid.svg" alt="Bootstrap" width="144" height="144">
     </div>
     <div class="bs-brand-item inverse">
-      <img class="svg" src="../assets/brand/bootstrap-outline.svg" alt="Bootstrap">
+      <img class="svg" src="../assets/brand/bootstrap-outline.svg" alt="Bootstrap" width="144" height="144">
     </div>
     <div class="bs-brand-item inverse">
-      <img class="svg" src="../assets/brand/bootstrap-punchout.svg" alt="Bootstrap">
+      <img class="svg" src="../assets/brand/bootstrap-punchout.svg" alt="Bootstrap" width="144" height="144">
     </div>
   </div>
 
@@ -274,8 +282,8 @@
 
         </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>
@@ -294,7 +302,7 @@
               Back to top
             </a>
             
-          </div>
+          </nav>
         </div>
         
       </div>
@@ -325,7 +333,7 @@
     <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>