Remove "##Abstract" from excerpts

index.html

@@ -87,7 +87,7 @@ <h2 class="my-mini-heading">{{ site.posts_btn }}</h2>
       <p class="my-item">
         <a href="{{ post.url | prepend: site.baseurl }}" class="my-link">{{ post.title }}</a><br>
         <span class="my-item-sub">{{ post.date | date: "%b %-d, %Y" }}</span><br>
-          {{ post.content | strip_html | truncatewords: 20 }}
+          {{ post.content | remove_first: "<h2 id=\"abstract\">Abstract</h2>" | strip_html | truncatewords: 30 }}
       </p>
     </li>
     {% endfor %}