Remove class attribute from h1 and h2

Author: bl-aire

binderhub/templates/index.html

@@ -13,13 +13,13 @@
     <div class="col-lg-10 col-lg-offset-1">
       {% block header %}
       <div id="header" class="text-center">
-        <h1 class="first-level-header">Turn a Git repo into a collection of interactive notebooks</h1>
+        <h1>Turn a Git repo into a collection of interactive notebooks</h1>
         <div id="explanation">
           Have a repository full of Jupyter notebooks? With Binder, open those notebooks in an executable environment, making your code immediately reproducible by anyone, anywhere.
         </div>
       </div>
       <div id="tutorials" class="text-center">
-        <h2 class="second-level-header">New to Binder? Get started with a <a href="https://the-turing-way.netlify.app/communication/binder/zero-to-binder.html" target="_blank">Zero-to-Binder tutorial</a> in Julia, Python, or R.</h2>
+        <h2>New to Binder? Get started with a <a href="https://the-turing-way.netlify.app/communication/binder/zero-to-binder.html" target="_blank">Zero-to-Binder tutorial</a> in Julia, Python, or R.</h2>
       </div>
       {% endblock header %}