class="na">class=</span><span class="s">&quot;add-on&quot;</span><span class="nt">&gt;&lt;i</span> <span class="na">class=</span><span class="s">&quot;icon-envelope&quot;</span><span class="nt">&gt;&lt;/i&gt;&lt;/span&gt;</span>
    <span class="nt">&lt;input</span> <span class="na">class=</span><span class="s">&quot;span2&quot;</span> <span class="na">type=</span><span class="s">&quot;text&quot;</span> <span class="na">placeholder=</span><span class="s">&quot;Email address&quot;</span><span class="nt">&gt;