Fix post images

static/css/app.css

@@ -69,7 +69,8 @@ a {
     color: #f06;
 }
-post > img {
+post > img,
+post > p > img {
     display: block;
     margin: auto;
     max-width: 90%;

templates/base.html

@@ -23,7 +23,7 @@
           <div class="col-md-12 text-center">
             <p class="avatar">
               <a href="/">
-                <img src="/static/img/avatar.jpg" alt="{{ author }}" class="avatar img-circle" />
+                <img src="/static/img/avatar.png" alt="{{ author }}" class="avatar img-circle" />
               </a>
             </p>
             <h3>