Make the sponsor "learn more" line smaller and keep link bold

site/static/css/theme.styl

@@ -430,6 +430,12 @@ article
     background: lighten($faintGrey, 3%)
     content-box()
 
+    a
+      font-weight: $boldFont
+
+    small
+      font-size: 0.75em
+
     .label
       color: #fff
       background: $primaryColor