Style footnotes

Fixes #187

assets/css/screen.css

@@ -1092,6 +1092,20 @@ body:not(.post-template) .post-title {
     transform: translateX(-50%);
 }
 
+.footnotes {
+    font-style: italic;
+    font-size: 1.3rem;
+}
+
+.footnotes li {
+    margin: 0.6rem 0;
+}
+
+.footnotes p {
+    margin: 0;
+}
+
+
 /* The author credit area after the post */
 .post-footer {
     position: relative;