add emphasis to sidebar desc

_layouts/default.html

@@ -58,7 +58,7 @@ <h1><a href="{{ "/" | absolute_url }}">{{ site.title | default: site.github.repo
           <img src="{{site.logo | relative_url}}" alt="Logo" />
         {% endif %}
 
-        <p>{{ site.description | default: site.github.project_tagline }}</p><h4>This webpage, unlike others, does not use a purchased domain, ensuring your email signature link to the charter remains future-proof as the URL will not expire.</h4><p>The original charter started as a <a href="http://web.archive.org/web/20150315012653/http://tedchris.posthaven.com/help-create-an-email-charter">blog post</a> by TED Curator Chris Anderson and TED Scribe Jane Wulf. Some contributors to the original Charter are listed <a href="http://web.archive.org/web/20150315012653/http://emailcharter.org/comments.html">here</a>.</p><h3>Share the Email Charter by <a href="https://email-charter.github.io/#add-to-email-signature">adding it to your email signature</a>.</h3>
+        <p>{{ site.description | default: site.github.project_tagline }}</p><h4>This webpage, <i>unlike others</i>, does not use a purchased domain, ensuring your email signature link to the charter remains <u>future-proof</u> as the URL will not expire.</h4><p>The original charter started as a <a href="http://web.archive.org/web/20150315012653/http://tedchris.posthaven.com/help-create-an-email-charter">blog post</a> by TED Curator Chris Anderson and TED Scribe Jane Wulf. Some contributors to the original Charter are listed <a href="http://web.archive.org/web/20150315012653/http://emailcharter.org/comments.html">here</a>.</p><h3>Share the Email Charter by <a href="https://email-charter.github.io/#add-to-email-signature">adding it to your email signature</a>.</h3>
 
         {% if site.github.is_project_page %}
         <p class="view"><a href="{{ site.github.repository_url }}">View the Project on GitHub <small>{{ site.github.repository_nwo }}</small></a></p>