perf: use small pic

_includes/post-item.html

@@ -12,9 +12,9 @@
       >
     </div>
     <div>
-      <h3 class="blog-home__list-items__item__header__title">
+      <h2 class="blog-home__list-items__item__header__title">
         <a href="{{ post.url | relative_url }}">{{ post.title | escape }}</a>
-      </h3>
+      </h2>
     </div>
     <div class="blog-home__list-items__item__header__description">
       <span>{{post.description}}</span>

_layouts/default.html

@@ -18,7 +18,7 @@
             <nav id="side-nav" class="float-left">
                 <div class="side-panel side-panel-top" id="about-me">
                     <div class="ayo-thumb">
-                        <img src="/assets/images/ayo.png" alt="{{ site.description }}" />
+                        <img src="/assets/images/ayo-sm.png" width="140" alt="{{ site.description }}" />
                     </div>
                     <h2>{{ site.description }}</h2>
                 </div>