--- a/playground/index.html	Mon Jul 08 14:00:06 2013 -0400
+++ b/playground/index.html	Mon Jul 08 14:07:39 2013 -0400
@@ -83,11 +83,11 @@
 
 
       <div class="container">
-        <br>
+        <br/>
 
         <h2>JSON-LD Playground</h2>
 
-        <br>
+        <br/>
 
         <div id="info">
            <p class="alert alert-warning">
@@ -99,7 +99,7 @@
            </p>
         </div>
 
-        <br>
+        <br/>
 
         <blockquote>Play around with JSON-LD markup by typing out
            some JSON below and seeing what gets generated from it at the
@@ -108,7 +108,7 @@
            is a work in progress.
         </blockquote>
 
-        <br>
+        <br/>
 
         <div class="btn-group" data-toggle="buttons-radio">
           <button class="btn disabled btn-primary">Examples:</button>
@@ -120,7 +120,7 @@
           <button id="btn-library" class="btn button"><span>Library</span></button>  
         </div>
         
-        <br><br>
+        <br/><br/>
 
         <div id="markup-container" class="">
           <div class="row">
@@ -142,15 +142,15 @@
           </div>
         </div>
 
-        <br>
+        <br/>
 
         <div id="permalink"></div>
 
-        <br>
+        <br/>
 
         <div id="markup-errors" class="text-error"></div>
 
-        <br>
+        <br/>
 
         <div id="param-errors" class="text-error"></div>