fix empty post

assets/sass/_theme/sections/posts.sass

@@ -91,6 +91,10 @@
             width: col-outside-container(4)
             .post-infos
                 @include sticky($spacing1)
+        // Safe spacing if post is empty
+        .document-content
+            min-height: 350px
+            
     .lead
         @include h2